msm8960: Add support for dsda platform

Add support for DSDA platform subtype & pass the command line
argument based on the platform subtype.

Change-Id: Id921f780184d731c937f9202cf994ce6ee73a55f
diff --git a/platform/msm_shared/smem.h b/platform/msm_shared/smem.h
index 054a776..a1e9860 100755
--- a/platform/msm_shared/smem.h
+++ b/platform/msm_shared/smem.h
@@ -274,6 +274,7 @@
 	HW_PLATFORM_SUBTYPE_SVLTE1 = 2,
 	HW_PLATFORM_SUBTYPE_SVLTE2A = 3,
 	HW_PLATFORM_SUBTYPE_SGLTE = 6,
+	HW_PLATFORM_SUBTYPE_DSDA = 7,
 	HW_PLATFORM_SUBTYPE_32BITS = 0x7FFFFFFF
 };