F2FS for /data to improve IO Performance (2/2)

See (1/2) for explanations

Change-Id: I5afbd266d93eca401d2200e9342e589f2364852f

Conflicts:
	arch/arm/configs/slim_grouper_defconfig
Disable F2FS Stat
config: Enable kexec
mach-tegra: Fix baseband-xmm-power.c compile error
net: usb: raw-ip: Fix raw_ip_net.c compile errors
usb: serial: baseband_usb_chr kernel panic

Two threads race for two resources when baseband_usb_close()
get called from a user process

Bug 988188

Change-Id: Ic962640b6414e576d34b7ff6870b21b644837434
Signed-off-by: pyu <pyu@nvidia.com>
Reviewed-on: http://git-master/r/107088
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vinayak Pane <vpane@nvidia.com>
Reviewed-by: Steve Lin <stlin@nvidia.com>
Fix moew compile errors
Revert "net: usb: raw-ip: check invalid reference"

This reverts commit 7edf7e6fec91090c5b5b346557d449cd0810b62d.
Fix all compile errors
net: usb: raw-ip: check invalid reference

before point reference check valid.
it prevents null point reference panic.

Bug 954883

Signed-off-by: Shawn Joo(Seongho) <sjoo@nvidia.com>
Reviewed-on: http://git-master/r/88781
(cherry picked from commit aac87c7d9c7cf7563bb79a29d517a6ffdba5874f)

Change-Id: Ica17acb6cc2a1a7ed03f41d8b569fdb6e2098fc9
Reviewed-on: http://git-master/r/96464
Reviewed-by: Simone Willett <swillett@nvidia.com>
Tested-by: Simone Willett <swillett@nvidia.com>