audio:msm8660: Fix for NT mode encode in audio HAL

-Convert channel mask to channel count.
-Update Makefile to compile omx components
 for 8660 and 8960.
-Remove mFd from AudioStreamIn class and
 add mFdin to fix encode crash issue.

Change-Id: I3236697b5006bf3cf5c8f395750881508e2df4a6

Conflicts:
	Android.mk