update ril, wifi tether fix

ril.h imported from https://github.com/omnirom/android_device_samsung_i9103/blob/android-4.4/include/telephony/ril.h
wpa_supplicant args imported from https://github.com/omnirom/android_device_samsung_i9103/blob/android-4.4/init.n1.rc as it said wifi tether fix