fstab: add lenght parameter for /data partition

Formatting /data in recovery needs to leave space for crypto footer.

Change-Id: I1c74604af4967c6c9df56c23c154bb6d67213d71
remove unneeded camera overlay

Change-Id: Ia8b2e87ffde8cbe56a7fc7b86696bb4f3c2da34d
cmhw: initial support for hardware tunables framework

Enable button backlight tuning.

TODO: Write HAL and settings for USB charging. Device parts
should be removed as they got killed in CM10.2.

Change-Id: I064c9cdbf1edecd1ab567349c9126cb42eeb161f