Enable Fno-Strict Aliasing Build Rules for Tablet build

In efforts to build for the tf101 we are going to loosen up the build rules.
Update Build to test if fixes ramdisk make.

Change-Id: I89e0d8f3715c8b0fd1efebe0b6e928cead17464e
Revert "Update Build to test if fixes ramdisk make."

This reverts commit dd41f36476258243e7d6419dfce31cff20a060ad.
build: Inline kernel building as a buildtime task

Kernel image integration is now done in the build system. The
"one true way" of doing this is to download the kernel source
into kernel/TARGET_BOOTLOADER_NAME (by usage of the cm.dependencies
mechanism or otherwise), and defining the TARGET_KERNEL_CONFIG
variable in the device's BoardConfig makefile

If the kernel's location doesn't match the automagic location
(multi-device kernel source, for instance), TARGET_KERNEL_SOURCE
can be used to specify a kernel path (i.e.,
"TARGET_KERNEL_SOURCE := kernel/shared-whatever")

If the device requires out-of-kernel-tree modules to be built,
the TARGET_KERNEL_MODULES variable can be used, pointing to a
_make target_ that will build and install such modules. Definition
of such a target is the device author's responsibility, the only
restriction is that it is a normal makefile recipe (example
below)

Optionally (or as an alternative), a prebuilt binary can also be
defined at BoardConfig, by usage of the TARGET_PREBUILT_KERNEL
variable. This binary will be used if the kernel source is absent
(or undefined).

A minimal BoardConfig.mk should look something like this:

TARGET_KERNEL_CONFIG := cyanogenmod_<device>_defconfig
TARGET_PREBUILT_KERNEL := device/<vendor>/<device>/kernel

To include, for example, the TI WLAN modules, this can be used:

-----------------------------
TIWLAN_MODULES:
       make -C hardware/ti/wlan/wl1283/platforms/os/linux/ KERNEL_DIR=$(KERNEL_OUT) ARCH="arm" CROSS_COMPILE="arm-eabi-" TNETW=1273 RANDOM_MAC=n REPORT_LOG=n
       mv hardware/ti/wlan/wl1283/platforms/os/linux/tiwlan_drv.ko $(KERNEL_MODULES_OUT)
       make -C hardware/ti/wlan/wl1283_softAP/platforms/os/linux/ KERNEL_DIR=$(KERNEL_OUT) ARCH="arm" CROSS_COMPILE="arm-eabi-" TNETW=1273 REPORT_LOG=n
       mv hardware/ti/wlan/wl1283_softAP/platforms/os/linux/tiap_drv.ko $(KERNEL_MODULES_OUT)

TARGET_KERNEL_MODULES := TIWLAN_MODULES
---------------------------

Change-Id: I8634fa4c788a42dc6f62e62ca170825b66db126a

build: Fix kernel module building on Darwin/OSX

Darwin/OSX build host does not have module-init-tools which is
required to generated modules.dep file. Switch to modules.order
file marker which is always generated instead.

Change-Id: I20c0fccd905fa668202c3e7284a8778db3728a65

kernel: Change path to kernel/<vendor>/<device>

Derive the kernel path from the device's own path (just replace "device"
with "kernel")

Change-Id: Idd44a0489e1ce280adf5ec4d9cfe2385c75dd115

kernel: Improve support for non-arm architectures

Remove hardwired references to the ARM arch and toolchains, and replace
them with the respective android build variables

Change-Id: Iae3eb548ca1d58ac808b5fa430d415283a809106

kernel: Fix ARM building

The default android ARM compiler, arm-androideabi-, does NOT work
for the Linux kernel. Special-case the ARM architecture to target
the ARM_EABI_TOOLCHAIN path directly

Change-Id: Ib672c99f114cb89d5fda3343d4dc68810d042d35

kernel: allow TARGET_KERNEL_MODULES to overwrite kernel modules

This is necessary to use compat-wireless since it needs to build a newer
version of cfg80211 (and sometimes mac80211) than the kernel sources version.
There are probably other instances of this type of need.

Change-Id: Ib5bf818286bc20987d8b9f9480a43f3e7690e239

kernel: Fix ccache inclusion logic

Builds were broken when CCACHE was missing from the environment
Change-Id: Ie8d6048f4600f1dc9c298593a50e37af04b96438

Conflicts:

	core/tasks/kernel.mk

kernel.mk: make use of ccache when requested

Change-Id: I9b6e28711bd5f590a76ac2b62a50b1d2de014e3e

Conflicts:

	core/tasks/kernel.mk

build: show accurate information on inline kernel warnings/errors

Having the variables on AndroidBoard as suggested causes errors
with mm/mmm, whereas having them on BoardConfig doesn't. Adjust
the warnings to reflect this.

Change-Id: I554c1f1073df678d36521f73bc236a1f4b02212e