Now that all implementations of arch_idle() are equivalent to cpu_do_idle()
we can just use the later directly and stop including mach/system.h.
Signed-off-by: NNicolas Pitre <nicolas.pitre@linaro.org>
Acked-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Acked-and-tested-by: NJamie Iles <jamie@jamieiles.com>
Acked-by: NTony Lindgren <tony@atomide.com>
Tested-by: NStephen Warren <swarren@nvidia.com>

This is a very initial pm support and basically does nothing.
With this pm support entry, drivers can start testing their own
pm functions.
Signed-off-by: NShawn Guo <shawn.guo@freescale.com>
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>