m7-common: Revert Speaker DMIC Endfire to stock values

* This matches HTC's stock M7 configuration.

Change-Id: I9006793b2f59600b7ca4fdd15f5ace0a60d9c337
m7-common: Remove unnecessary LTE overlay option

Change-Id: Ife5e12cb3b18aa206546a2bd45177da004b84804