Revert "Adapt config to support backport wl12xx drivers."

This reverts commit a8d734881cd5c493da777b590ba76a2ae827a840.

Currently I pefer the CM "official" supported drivers.
fix wifi/p2p-config

Use right config-file for wifi and p2p and enable p2p on the
p2p-interface.

Inspired by CM gerrit change:
http://review.cyanogenmod.org/#/c/60050/
omap4-common: fix wifi/p2p-config