audioservice: always acquire wake lock as AudioService
audioservice: always acquire wake lock as AudioService

When a wake lock is aquired while executing a binder call and released
in the message handler, AppOps complains about the uid mismatch.

Clear the binder identity before acquiring the wake lock.

Bug: 10627124.
Change-Id: Ibd5babc1ae699bffde1a659562089eb091879106

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base