hal: Fixes for 8916 features

 * Allow additional offload formats
 * Use correct mixer controls for sample rate and bit width

Change-Id: I7db10c7c90de6736ef5e127808ed7411ad71ff86
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_hardware_qcom_audio-caf into android-4.4_legacy