am bb33d6fd: am 997dc32b: Merge "add an api for getting a device serial number" into gingerbread

Merge commit 'bb33d6fd987727c24372d7b7109ec5d1db82efe2'

* commit 'bb33d6fd987727c24372d7b7109ec5d1db82efe2':
  add an api for getting a device serial number