mach-msm: Add msm_mpdecision

This currently only does the following thing:
Screen on -> CPU1 online
Screen off -> CPU1 offline

More to come.

Signed-off-by: showp1984 <showp1984@gmail.com>

Conflicts:
	arch/arm/mach-msm/msm_mpdecision.c
mach-msm: mpdecision: small cleanup

Signed-off-by: showp1984 <showp1984@gmail.com>