init: allow graphics to kill the bootanimation

fixes "init: sys_prop: permission denied uid:1003
name:service.bootanim.exit"
add ro.zram.default=18
remove conflicting init..rc cpu parameters
underp brightness and light sensor sysfs

Signed-off-by: tonyp <tonyptonyp@gmail.com>
fix autobrightness
fix search button hardwarekeys binding
Merge branch 'cm-10.1' into cm-10.1-newbl