Notify Errors Appropriately from SoftMPEG2

This is to ensure that the framework realises that an error has
occured and does not call onQueueFilled if the error is fatal.

Bug: 36715268

Change-Id: If02499d306aa9b6df64a7f25d43d1bdf318a10cd
(cherry picked from commit eae3ad0585d17bab12bbd831b58407c122732a1c)
2 files changed