platform: msm_shared: Add hardware subtype Polaris.

Add hw subtype Polaris for supporting polaris devices.

Change-Id: Id409aecc6873d56e1c46d81f60abc9063ec78839
diff --git a/platform/msm_shared/smem.h b/platform/msm_shared/smem.h
index b174068..a342f86 100644
--- a/platform/msm_shared/smem.h
+++ b/platform/msm_shared/smem.h
@@ -473,6 +473,7 @@
 	HW_PLATFORM_SUBTYPE_DSDA = 7,
 	HW_PLATFORM_SUBTYPE_DSDA2 = 8,
 	HW_PLATFORM_SUBTYPE_SGLTE2 = 9,
+	HW_PLATFORM_SUBTYPE_POLARIS = 64,
 	HW_PLATFORM_SUBTYPE_32BITS = 0x7FFFFFFF
 };