mmc: Correct the value of MMC_NUM_PHY_PARTITION

eMMC card can support up to 7 physical partitions, including 2 boot,
1 RPMB and 4 GPs. Change MMC_NUM_PHY_PARTITION from 6 to 7, which is
the correct value.

Signed-off-by: Yi Sun <yi.y.sun@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

include/linux/mmc/card.h

@@ -214,11 +214,12 @@ enum mmc_blk_status {
 };
 
 /* The number of MMC physical partitions.  These consist of:
- * boot partitions (2), general purpose partitions (4) in MMC v4.4.
+ * boot partitions (2), general purpose partitions (4) and
+ * RPMB partition (1) in MMC v4.4.
  */
 #define MMC_NUM_BOOT_PARTITION	2
 #define MMC_NUM_GP_PARTITION	4
-#define MMC_NUM_PHY_PARTITION	6
+#define MMC_NUM_PHY_PARTITION	7
 #define MAX_MMC_PART_NAME_LEN	20
 
 /*