wifi config: remove group permission setting

Removes the group permission setting in the wpa_supplicant.conf
template. WiFi works without it.
audio: Fix SIP calling

Original commit:
http://git.cryptomilk.org/projects/marvel/android_device_htc_msm7x27-common.git/commit/?id=b69c96a496e8bf1f4ade591359e92cb114729032

Works for the Marvel device.