tuna: support performance profiles

powersave: 307mhz gpu
balanced: 384mhz gpu
performance: 512mhz gpu + 920mhz hispeed_freq (instead of the default 700mhz)

Change-Id: I4d3c9162599e18294130d8fb1c6a7437d201d9b0
default: balanced
tuna: remove screen timeout overlay

Change-Id: I91fafab5886d7022c24d5d966f521ea11d35ba14
tuna: cmhw: add support for adaptive backlight

Change-Id: I638d313afbee50484dbe53e35808b0cbe3262cbc
Merge "tuna: cmhw: add support for adaptive backlight" into cm-11.0
tuna: recovery: protect important partitions

Formatting /factory, /boot, /sbl or /xloader is pointless and dangerous.

Change-Id: I32980c57a71e6f7e7bed761379ce157a035ffaf7
Merge branch 'cm-11.0' into kk_mkt