msm: pm: Add support to query cpu status

During hotplug operation primary core is required to query
cpu registers to determine whether secondary core has
successfully shutdown.

Change-Id: I9dc359e2af20f79127a74f2c087fa39614f18957
Signed-off-by: Anji Jonnala <anjir@codeaurora.org>
diff --git a/arch/arm/mach-msm/board-8930.c b/arch/arm/mach-msm/board-8930.c
index 25ba1aa..fbcc6f1 100644
--- a/arch/arm/mach-msm/board-8930.c
+++ b/arch/arm/mach-msm/board-8930.c
@@ -2473,6 +2473,7 @@
 	&msm8930_iommu_domain_device,
 	&msm_tsens_device,
 	&msm8930_cache_dump_device,
+	&msm8930_cpu_slp_status,
 };
 
 static struct platform_device *cdp_devices[] __initdata = {