platform: msm_shared: Add new platform ids for MSM8974 variants.

Change-Id: Ic10e387d2a0fdf4de3d9f48185786d2d8f6eaa9f
diff --git a/platform/msm_shared/smem.h b/platform/msm_shared/smem.h
index e0cbc5b..4749959 100755
--- a/platform/msm_shared/smem.h
+++ b/platform/msm_shared/smem.h
@@ -297,6 +297,8 @@
 	MSM8627AA = 182,
 	MSM8227AA = 183,
 	APQ8074   = 184,
+	MSM8274   = 185,
+	MSM8674   = 186,
 };
 
 enum platform {