platform: msm_shared: Add support for rpmb

Add support to perform read and write from rpmb partition in
emmc driver.

Change-Id: I41ded88d079973dbc6dddd5bfcd69a9d9bb8a3b4
diff --git a/platform/msm_shared/include/sdhci.h b/platform/msm_shared/include/sdhci.h
index 604ac81..c0b484d 100644
--- a/platform/msm_shared/include/sdhci.h
+++ b/platform/msm_shared/include/sdhci.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
@@ -100,6 +100,7 @@
 	uint32_t cmd_retry;     /* Retry the command, if card is busy */
 	uint32_t cmd23_support; /* If card supports cmd23 */
 	uint64_t cmd_timeout;   /* Command timeout in us */
+	bool write_flag;        /* Write flag, for reliable write cases */
 	struct mmc_data data;   /* Data pointer */
 };