GCC 4.8 -o3 fixes

Conflicts:
	fs/namei.c
	kernel/sysctl.c
	kernel/workqueue.c
	net/netfilter/nf_conntrack_h323_main.c
	net/socket.c
	net/unix/af_unix.c
	sound/usb/mixer.c
Enable arch_power
 Update ARM topology and add cpu_power driver
defconfig: update