[PATCH 19/20] ARM: substitute arch_idle()

[Tony Lindgren]

* Nicolas Pitre <nico at fluxnic.net> [111219 01:43]:
> 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: Nicolas Pitre <nicolas.pitre at linaro.org>

Acked-by: Tony Lindgren <tony at atomide.com>