Revert "s4-common: disable unavailable notification light overlay"

This reverts commit ce3f78be283312783b860eede8d88f6bc29b663d.

Change-Id: I96479fa7bf8082c7a5ec4e71ead212eb2f40a2f6
s4-common: update wifi init

bt-pan: dhcpcd: Allow address claim by ARP, don't set gateway
p2p: dhcpcd: -a performs no function (see if-options.c in dhcpcd source)
wlan0: dhcpcd: set domainname as given by DHCP server, set gateway

wpa/p2p_supplicant: set disable_scan_offload=1

Change-Id: I23f23b310357e13fcbde017de8a016618a6b8514
Merge branch 'cm' into HEAD