tabpro-common: audio: Remove custom platform code

Change-Id: I90980c774d5392bb0c4ec449d40f776aa784277d

Conflicts:
	BoardConfigCommon.mk
	audio/platform/customplatform.c
tabpro-common: audio: Fix bluetooth acdb ids

Change-Id: Ic2c3e8b73594374e2649b63ba7a6e358d8c5ad38
tabpro-common: audio: Improve compatibility with "handset"

This makes Skype work when it decides to use a handset even
though our device doesn't have a handset...

Change-Id: I39c7d9f75b4ddf6a94f50c91238144bedc15c6f9

Conflicts:
	audio/mixer_paths.xml