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

Merge commit '9efd523c4611c0cf10e712453a699c083a01064c' into eclair-mr2

* commit '9efd523c4611c0cf10e712453a699c083a01064c':
  Add warning that hardware auto-brightness is deprecated and will be removed in the next release.