drivers: renesas: eMMC: Move to common

Move eMMC driver code to common directory, so that the same
code can be re-used by both R-Car Gen3 and RZ/G2 platforms.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Change-Id: I7f3055709337327d1a1c9f563c14ad1626adb355
diff --git a/plat/renesas/rcar/platform.mk b/plat/renesas/rcar/platform.mk
index 8613f5e..02be49a 100644
--- a/plat/renesas/rcar/platform.mk
+++ b/plat/renesas/rcar/platform.mk
@@ -307,7 +307,7 @@
 			-Idrivers/renesas/rcar/delay		\
 			-Idrivers/renesas/rcar/rom		\
 			-Idrivers/renesas/rcar/scif		\
-			-Idrivers/renesas/rcar/emmc		\
+			-Idrivers/renesas/common/emmc		\
 			-Idrivers/renesas/rcar/pwrc		\
 			-Idrivers/renesas/rcar/io
 
@@ -330,12 +330,6 @@
 			drivers/renesas/rcar/dma/dma_driver.c		\
 			drivers/renesas/rcar/avs/avs_driver.c		\
 			drivers/renesas/rcar/delay/micro_delay.c	\
-			drivers/renesas/rcar/emmc/emmc_interrupt.c	\
-			drivers/renesas/rcar/emmc/emmc_utility.c	\
-			drivers/renesas/rcar/emmc/emmc_mount.c		\
-			drivers/renesas/rcar/emmc/emmc_init.c		\
-			drivers/renesas/rcar/emmc/emmc_read.c		\
-			drivers/renesas/rcar/emmc/emmc_cmd.c		\
 			drivers/renesas/rcar/watchdog/swdt.c		\
 			drivers/renesas/rcar/rom/rom_api.c		\
 			drivers/renesas/rcar/board/board.c