mmc: EXT_CSD registers for write protection

Add the EXT_CSD register definition related to write protection.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/include/mmc.h b/include/mmc.h
index e83c224..4ecd6c7 100644
--- a/include/mmc.h
+++ b/include/mmc.h
@@ -223,6 +223,9 @@
 #define EXT_CSD_WR_REL_PARAM		166	/* R */
 #define EXT_CSD_WR_REL_SET		167	/* R/W */
 #define EXT_CSD_RPMB_MULT		168	/* RO */
+#define EXT_CSD_USER_WP			171	/* R/W & R/W/C_P & R/W/E_P */
+#define EXT_CSD_BOOT_WP			173	/* R/W & R/W/C_P */
+#define EXT_CSD_BOOT_WP_STATUS		174	/* R */
 #define EXT_CSD_ERASE_GROUP_DEF		175	/* R/W */
 #define EXT_CSD_BOOT_BUS_WIDTH		177
 #define EXT_CSD_PART_CONF		179	/* R/W */