staging: prima: Allow prima_wlan to be built inside kernel

* Prima needs wcnss to be set up when it loads.
  Therefore use a platform_driver in to notify prima that wcnss is ready.

Conflicts:
	drivers/net/wireless/wcnss/wcnss_wlan.c
	drivers/staging/prima/CORE/HDD/src/wlan_hdd_main.c

Change-Id: I1d20cec90b446c9318b8a13143ac21ff33d2acec
msm: HTC: s4: update prima config

Change-Id: Idab2c48b94975521bbf879130e52a7dab28b86f2