block: bfq: Squashed update from BFQ-v7r4 to BFQ-v7r5

Change-Id: I749ef141246db7020cec0b10d980ec854a572603
Revert "Enable setting security contexts on rootfs inodes."

This reverts commit fdbc093f6d6216fdc1313a481ccce344e5750207.
usb: gadget: mass_storage: added sysfs entry for cdrom to LUNs

This patch adds a "cdrom" sysfs entry for each mass_storage LUN, just
like "ro" sysfs entry. This allows switching between USB and CD-ROM
emulation without reinserting the module or recompiling the kernel.

Change-Id: Idf83c74815b1ad370428ab9d3e5503d5f7bcd3b6
FS: import F2FS

Signed-off-by: Paul Reioux <reioux@gmail.com>
f2fs: data: AIO optimization compatibility fixup

Signed-off-by: Paul Reioux <reioux@gmail.com>
android: logger: reduce to 128k the size of logger device
arch: arm: remove tracer support
Enabled zcache by Default
msm8x27: enable f2fs in defconfig
Added optimized ARM RWSEM algorithm.

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
Signed-off-by: Francisco Franco <franciscofranco.1990@gmail.com>
Overclock to 1.6 Ghz

Change-Id: I133d4150c9ecfd304d01a4ab8caccd5d001b58b7
Revert "Overclock to 1.6 Ghz"

This reverts commit 4d783c3f36db8f91c81248db9211ff591645cb53.
Debrand

Change-Id: I8be6605d8f854328b5913cb712573f33b5f90d4c