hal: move audio specific config files to HAL

-Move all audio specific config files from device/qcom/msm8xxx
to hardware/qcom/audio/configs/msm8xxx folder for
msm8937 and msm8953 targets.
-Move all audio configurations from BoardConfigVendor.mk
to target specific makefile in hardware/qcom/audio/configs.
-Move all audio related system properties from system.prop
to target specific makefile

Change-Id: I6317c334ce8c7fe6425346bb1e803a1dd7a7de0e