Revert "Fix removal of backlight settings"

This reverts commit 40e253430684df3d7ef3805f968fe81713bd6728.

Conflicts:

	src/com/android/settings/cyanogenmod/HardwareKeys.java
Revert "Button & keyboard backlight brightness adjustment (1/2)"

This reverts commit c4af466d746bc32a52136defe6ff08d6fedf17bf.

Conflicts:

	src/com/android/settings/cyanogenmod/HardwareKeys.java