am 0b08abe1: Merge change I9521cf8b into eclair

Merge commit '0b08abe1b8e4f49cfaefb8226696664ad3d5ca6a' into eclair-mr2

* commit '0b08abe1b8e4f49cfaefb8226696664ad3d5ca6a':
  Register for light sensor events if non-hardware based auto-brightnees is enabled