hammerhead kernel: implement always on rgb led support

When offms is set to 0, configure a single point
duty cycle at the desired led brightness.

Change-Id: I93b61af52ee2f695035e7f5d78814251c8d1da8d
FS: import F2FS

Signed-off-by: Paul Reioux <reioux@gmail.com>
defconfig: enable F2F2

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
defconfig: f2fs: enable fsf2 fs security

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
LCD_KCAL: Color Control driver for Nexus 5

Conflicts:
	arch/arm/mach-msm/lge/board-8974-hammerhead.c
defconfig: enable kcal

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
Merge branch 'exp'