Update wifi config from bcm4329 to bcmdhd

Evervolv's msm7x30-3.0 kernel uses bcmdhd

Change-Id: I370779b5ea075cdf44bf5feef0530ea814da8c6a
Remove 7x30-recovery include

Change-Id: I906aa1c583a9b1cd25f1a2b929af5f1d9fa472bd
Change overlay flag to model a common device tree

PRODUCT is meant to be used by a particular device, while DEVICE is used
for several products in a common device model. PRODUCT overrides DEVICE.

Change-Id: I5a2068dcd050d4dea6adf04488e7badb8350d9b3
gps: switch to gps-legacy and remove mecha specifics

gps-legacy is included from evervolv and these flags match their msm7x30-common

Change-Id: I65e4f034112c17834f5b02514c50a74fa0a59f39