am f2055570: am 9efd523c: Add warning that hardware auto-brightness is deprecated and will be removed in the next release.

Merge commit 'f20555706c81dcb9fcb1fee9ce263072cd77ea3c' into eclair-mr2-plus-aosp

* commit 'f20555706c81dcb9fcb1fee9ce263072cd77ea3c':
  Add warning that hardware auto-brightness is deprecated and will be removed in the next release.