omx: add asString for new enumerations and fix some issues am: 1b9c8069f4
am: 782ac39b9b

* commit '782ac39b9bb0d6e801316c75db5e700eef808f48':
  omx: add asString for new enumerations and fix some issues

Change-Id: Ic734366ec2f995ebb262a36cb0ca7556754b6aee