omx: prevent input port enable/disable for software codecs am: 2b94fa8277 am: c83b53c9e5 am: f054728108 am: 062fd4a341 am: 45fb504379 am: 56fb1ed051 am: e02be17174 am: 7f58e2ec8f am: e262ff5af7
am: 360091a894

Change-Id: Idbe41f9c23ade65f384f1efe91b40ab81db47a6c