alsa_sound: change input device for communication

Match to VOIP speaker device pair with voice call.  In voice call using
speakerphone, we want to use BACK_MIC for input.

Bug: 7329372
Change-Id: I9c42719f17e2be6f0b38292dc74ac3ce54767b64
Signed-off-by: Iliyan Malchev <malchev@google.com>
1 file changed
tree: 5d58ba6d4057e29eaf754a2f0cd7d98dec83c01b
  1. alsa_sound/
  2. libalsa-intf/
  3. Android.mk