use headset mic as default input device for dragonbord 410c

Modified policy configuration to make headset mic as the default input.
This change is needed till routing for onboard mic is provided.

Change-Id: Ied855ba1792c9dd320db906e8854919086110132

Signed-off-by: Anu Ramanathan <anur@codeaurora.org>
Signed-off-by: Sourabh Banerjee <sbanerje@codeaurora.org>
1 file changed