msm8974-common: Separate handset-stereo-dmic-ef from dmic-ef

Change-Id: Ie281647ddc17c98a7f41715ad0f927aa0429413d
msm8974-common: Increase volume of handset-mic to match stereo level

* Addresses BACON-121

Change-Id: I60753c9ac1943a41ab9b19d87cb64aa11d8ea937
msm8974: Enable resampler use in PCM offload path

 * In the cases where we have concurrent conflicting
   sample rates, we need to resample one stream since
   the backend codec only knows about a single stream.

Change-Id: I485d9782046741cbbbabfcf8e86f26a7b3a38091