m7-common: Disable MemoryHeapPmem flag

* Camera HAL no longer requires this.

Change-Id: Ic4f60873da45c3cce6a42f80bf5d450e675603ff
m7-common: Reset Speaker DMIC Endfire volume to default

Change-Id: I985ded6054e5b55df1f35f575baa796709f0a491