frameworks/av: Changes to match exact format for input profile

-Currently a input profile for which device is matched is selected and
 for other parameters such as format, sample rate and channel mask
 it uses best match instead of exact match.
-Change done to check for exact format match and if fails then fall back to
 old approach(best match)

Change-Id: Ic1f839600906b2fb84867b4bcb3ab1d159aa0a67