platform: msm_shared: add support for ATP platform.

Change to add support for ATP platform.

Change-Id: I7c23c31a06e3c9887f691ee97c35845a348b0f0a
diff --git a/platform/msm_shared/smem.h b/platform/msm_shared/smem.h
index 51692e0..7c6a25f 100644
--- a/platform/msm_shared/smem.h
+++ b/platform/msm_shared/smem.h
@@ -499,6 +499,7 @@
 	HW_PLATFORM_STP = 23,
 	HW_PLATFORM_SBC = 24,
 	HW_PLATFORM_ADP = 25,
+	HW_PLATFORM_ATP = 33,
 	HW_PLATFORM_32BITS = 0x7FFFFFFF,
 };