Fix regression on audio effects for VOICE_RECOGNITION source

Add the missing assignments of the input channel mask.
Fix the test on the input channel mask so audio effects can be
 enabled on the VOICE_RECOGNITION source, except when recording
 from the front+back mic.

Bug 9320596

Change-Id: Ibfbda2cec8444be59eaa34493cff6af97e9776dc
1 file changed