mach-msm: Add msm_mpdecision Kconfig & Makefile hooks
Also rename qcom's mpdecision to stay in place and be used if CONFIG_MSM_MPDEC is not set

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

Conflicts:
	arch/arm/mach-msm/Makefile
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: Dennis Rassmann <showp1984@gmail.com>
import showps mpdecision