Galaxy S III settings: Add support for keyboard backlight

Add support for keyboard backlight on Samsung MSM8960 devices
with a hard keyboard, such as the Galaxy S Relay 4G.

Change-Id: I0ec245e39315d782f4429490f84a9f9227c556a4
msm8960: Revert to older Adreno driver

 * There are still issues with the new driver released by Qualcomm.
 * Rollback to the older Mako driver for now.

Change-Id: I8ddf6b61223664b9c019afa9dfd997ba20c49137
Merge pull request #9 from CyanogenMod/cm-10.1

Pull request