m7-common: set camera hardware type

Change-Id: Ia25730d085737454faa62206f971f80b75dc9071
m7-common: remove HSPA distinguishable overlay option

* This is set by default for all devices in the global CM overlay.

Change-Id: Ic14bd9e2f24bf79ad885153b9e5aeccb800cc5f2
m7-common: consolidate GSM device proprietary files under m7-gsm

Change-Id: Ia54e24ce163160f89eee7ed8454867127cc38137
m7-common: allow m7spr and m7vzw to use their own radio blobs.

Change-Id: Icad77b0eb5dc13e41e7fab355900a3fb377040e7
m7-common: camera: clean up wrapper code

* Clean up formatting, warnings, style, etc.

Change-Id: Ie0757befa341e209e2b552b42bffee6b52d8df0a
m7-common: Fix video HDR, clean up camera wrapper code

Change-Id: I803e0b3656c3cc8a484dfa8a754ce9c80ca7c937