am 77d6fcff: cherrypick Change-Id: I8c52dbe5ac04dfeb1b466b163ae3aec5dc401175 docs: update supports-screens doc with xlargescreens attribute... we updated the Supporting Multiple Screens document with this attribute for gingerbread, but this document was not updated at

* commit '77d6fcff7b97b53d7bf15557e117d32b95c21f63':
  cherrypick Change-Id: I8c52dbe5ac04dfeb1b466b163ae3aec5dc401175 docs: update supports-screens doc with xlargescreens attribute... we updated the Supporting Multiple Screens document with this attribute for gingerbread, but this document was not updated at that time.