Fixes for slow channel switching

This fixes and closes #2132.
xbmc: add PR2591

Signed-off-by: Stephan Raue <stephan@openelec.tv>
xbmc-master: add PR2579

Signed-off-by: Stephan Raue <stephan@openelec.tv>
xbmc: add PR2593

Signed-off-by: Stephan Raue <stephan@openelec.tv>
xbmc: add PR2641

Signed-off-by: Stephan Raue <stephan@openelec.tv>
xbmc: add upstream patch

Signed-off-by: Stephan Raue <stephan@openelec.tv>
Merge branch 'master' of github.com:OpenELEC/OpenELEC.tv
projects/*/linux: add P54 network driver

Signed-off-by: Stephan Raue <stephan@openelec.tv>
wlan-firmware: update to wlan-firmware-0.0.11

Signed-off-by: Stephan Raue <stephan@openelec.tv>
busybox: increase min_free_kbytes size

Signed-off-by: Stephan Raue <stephan@openelec.tv>
projects/RPi/xbmc: update advancedsettings.xml

Signed-off-by: Stephan Raue <stephan@openelec.tv>
AppleTV: Enable MSI support for ATV1

Not sure why Message Signaled interrupts was disabled, but the ATV1 hardware *does* support MSI and we specifically enable MSI for the nvidia driver.

Here is a list of hardware that supports and uses MSI on AppleTV 1st Gen :

```
00:01.0 PCI bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express PCI Exp
ress Root Port (rev 03) (prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0
        Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
        Memory behind bridge: 20000000-21ffffff
        Prefetchable memory behind bridge: 0000000010000000-000000001fffffff
        Capabilities: [88] Subsystem: Intel Corporation Device 0000
        Capabilities: [80] Power Management version 2
        Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
        Capabilities: [a0] Express Root Port (Slot+), MSI 00
        Capabilities: [100] Virtual Channel
        Capabilities: [140] Root Complex Link
        Kernel driver in use: pcieport

00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 02)
        Subsystem: Realtek Semiconductor Co., Ltd. Device 0885
        Flags: bus master, fast devsel, latency 0, IRQ 42
        Memory at 22a00000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: [50] Power Management version 2
        Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
        Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
        Capabilities: [100] Virtual Channel
        Capabilities: [130] Root Complex Link
        Kernel driver in use: snd_hda_intel

00:1c.0 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 1 (rev 02) (prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0
        Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
        I/O behind bridge: 00003000-00003fff
        Memory behind bridge: 22000000-228fffff
        Prefetchable memory behind bridge: 0000000022b00000-0000000022cfffff
        Capabilities: [40] Express Root Port (Slot+), MSI 00
        Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
        Capabilities: [90] Subsystem: Gammagraphx, Inc. (or missing ID) Device 0000
        Capabilities: [a0] Power Management version 2
        Capabilities: [100] Virtual Channel
        Capabilities: [180] Root Complex Link
        Kernel driver in use: pcieport

01:00.0 VGA compatible controller: NVIDIA Corporation G72M [Quadro NVS 110M/GeForce Go 7300] (rev a1) (prog-if 00 [VGA controller])
        Subsystem: Apple Inc. Device 0081
        Flags: bus master, fast devsel, latency 0, IRQ 44
        Memory at 21000000 (32-bit, non-prefetchable) [size=16M]
        Memory at 10000000 (64-bit, prefetchable) [size=256M]
        Memory at 20000000 (64-bit, non-prefetchable) [size=16M]
        Capabilities: [60] Power Management version 2
        Capabilities: [68] MSI: Enable+ Count=1/1 Maskable- 64bit+
        Capabilities: [78] Express Endpoint, MSI 00
        Capabilities: [100] Virtual Channel
        Capabilities: [128] Power Budgeting <?>
        Kernel driver in use: nvidia
        Kernel modules: nvidia

02:00.0 Multimedia controller: Broadcom Corporation BCM70015 Video Decoder [Crystal HD]
        Subsystem: Broadcom Corporation BCM70015 Video Decoder [Crystal HD]
        Flags: bus master, fast devsel, latency 0, IRQ 43
        Memory at 22800000 (64-bit, non-prefetchable) [size=64K]
        Memory at 22000000 (64-bit, non-prefetchable) [size=8M]
        Capabilities: [48] Power Management version 3
        Capabilities: [60] Vendor Specific Information: Len=6c <?>
        Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+
        Capabilities: [cc] Express Endpoint, MSI 00
        Capabilities: [100] Advanced Error Reporting
        Capabilities: [13c] Virtual Channel
        Kernel driver in use: crystalhd
        Kernel modules: crystalhd
```
Merge pull request #2136 from dagwieers/pvr-channel-speedup

XBMC: Fixes for slow channel switching
AppleTV: Make in-kernel config modular (but keep it available)

The in-kernel config (/proc/config.gz) is a useful way to understand how your existing kernel has been compiled, however it does use some memory to represent this information inside the kernel. However by making it optional you can still have this information if wanted, but as part of the system ramdisk (as a kernel module) rather than in memory all the time.

For AppleTV this was not (yet) enabled, for other platforms we make it modular.
AppleTV: Disable PAT

The AppleTV hardware does not have PAT support.
AppleTV: Enable PCIEAER and PCIEPM support

The AppleTV hardware supports both PCI-Express Advanced Error Reporting and PCI-Express Power Management.
Merge pull request #2220 from dagwieers/kernel-ikconfig

AppleTV: Make in-kernel config modular (but keep it available)
AppleTV: Disable intel_idle support

The AppleTV hardware does not support intel_idle.
AppleTV: Disable MPPARSE

The AppleTV hardware does not have MPPARSE support (as it does not have SMP capabilities).
Merge pull request #2219 from dagwieers/kernel-msi

AppleTV: Enable MSI support for ATV1