drivers: renesas: io: Move to common

Move io 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: Ic661e415c91a1fbfd5eee3bba86466037e51574b
diff --git a/plat/renesas/common/common.mk b/plat/renesas/common/common.mk
index 9b14663..82f4d7d 100644
--- a/plat/renesas/common/common.mk
+++ b/plat/renesas/common/common.mk
@@ -79,6 +79,9 @@
 			${LIBFDT_SRCS}					\
 			common/desc_image_load.c			\
 			drivers/renesas/common/common.c			\
+			drivers/renesas/common/io/io_emmcdrv.c		\
+			drivers/renesas/common/io/io_memdrv.c		\
+			drivers/renesas/common/io/io_rcar.c		\
 			drivers/renesas/common/emmc/emmc_interrupt.c	\
 			drivers/renesas/common/emmc/emmc_utility.c	\
 			drivers/renesas/common/emmc/emmc_mount.c	\