s4-common: update wpa_supplicant config

Change-Id: I7fabd2fc49c4ad321176c0b6325af5db96f4c6cd
s4-common: disable unavailable notification light overlay

Change-Id: I8038e31ea6ba4d78e8129e3bb910588c6f78c71e
Merge remote-tracking branch 'upstream/cm-11.0' into cm-11.0