ARM: pm: preserve r4 - r11 across a suspend
ARM: pm: preserve r4 - r11 across a suspend

Make cpu_suspend()..return function preserve r4 to r11 across a suspend
cycle.  This is in preparation of relieving platform support code from
this task.

Acked-by: Frank Hofmann <34ce6e15f6d8a1d88fc9ac99563e6bd25c0919f9@tomtom.com>
Tested-by: Kevin Hilman <f9849b02abe18c1ece6bd40346458ed53f49d31b@ti.com>
Acked-by: Jean Pihet <24e638326d55c866138eb393a278ce90676b0635@ti.com>
Signed-off-by: Russell King <f6aa0246ff943bfa8602cdf60d40c481b38ed232@arm.linux.org.uk>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas