hlte: Audio update

 * Recreate mixer_paths.xml from Samsung's 4.4 release
 * Don't hack up all the path names, just use the platform API to
   override what the HAL expects normally.
 * Added extra paths such as USB audio, HFP, Listen, proxy, etc.
 * Add USB digital support for VOIP calls (need to merge AV path still)

Change-Id: I292a42fd99d61fa112e072c063f70f080f032d1b

Conflicts:
	system.prop
hlte: Enable compressed VoIP

Change-Id: I15edc077b3be10a91bad6dd685a56b4b833ef8bb
hlte: Enable call recording for uplink and downlink

Change-Id: Ibb508b9281ae3f81f149788fad223fd72e14e880

Remove changes to system.prop since
call recording is enabled by default to all
Hlte: Raise video recording volume

Change-Id: I4ab3879773cd522ad4954f39da13bf52e7fa850d
Hlte: Set call recording source to voice line