Libstagefright: Fix in AudioPlayer media time mapping

- Use seektime as the play position when player is still
  seeking.

Change-Id: Id92a07e3291280b17b83d53ff2e218acc3ee6020

Conflicts:
	media/libstagefright/AudioPlayer.cpp

Change-Id: Id92a07e3291280b17b83d53ff2e218acc3ee6020
Merge "Libstagefright: Fix in AudioPlayer media time mapping" into du44