configs: msm8937: Add speaker and headphones paths

When notification sound is played during voice call, voice-speaker-and
-headphones device is selected. Usecase paths are missing for this
combo in internal codec mixer paths xml files.

Added playback and voice use case paths for HS and SPKR combo device.

Change-Id: I218ca7f1f81ba6fc7ec04d1b56aa239806588249