m7-common: fstab: Add misc partition

The misc partition is used for certain recovery actions.
The bootloader message is at offset location 2048 (0x800).

Change-Id: I91d2bfd243083f6f9730fff9d88357c18254e701
Signed-off-by: Brint E. Kriebel <bekit@cyngn.com>
Signed-off-by: doc <doc.divxm@gmail.com>
m7-common: move CDMA Telephony overlays to devices

These overlay settings are applicable to m7spr and m7vzw only, and
should be applied to more spns than 310120/311480. Move them out of
common and into the correct overlay structure for each device.

Change-Id: Id9881ca2062b6b8cdf32b19a05abd66929bd492a