am cc9a63db: Add support for specifying the current LCD brightness mode to the backlight driver.

Merge commit 'cc9a63dbc2b5569ef65ec3a04d86dbdfdee3f134' into eclair-plus-aosp

* commit 'cc9a63dbc2b5569ef65ec3a04d86dbdfdee3f134':
  Add support for specifying the current LCD brightness mode to the backlight driver.