msm: 7x30: Enable SPARSEMEM, HOTPLUG, HOTREMOVE.

Enable Sparsemem, Hotplug, Hotremove and Migration
for 7x30.

Change-Id: I55b96a6513b1da61263ac2f7708bbb894a156c73
Signed-off-by: Karthik Parsha <kparsha@codeaurora.org>
(cherry picked from commit c1fbe4a987b6fccffe11d86ee00b25348be426f7)

Conflicts:

	arch/arm/Kconfig
	arch/arm/mach-msm/Kconfig