drivers: renesas: dma: Move to common

Move dma 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: Idce2e2f4e098cfc17219f963373d20ebf74e5b7c

plat/renesas/common/common.mk

@@ -84,6 +84,7 @@ BL2_SOURCES	+=	${RCAR_GIC_SOURCES}				\
 			drivers/renesas/common/io/io_emmcdrv.c		\
 			drivers/renesas/common/io/io_memdrv.c		\
 			drivers/renesas/common/io/io_rcar.c		\
+			drivers/renesas/common/dma/dma_driver.c		\
 			drivers/renesas/common/delay/micro_delay.c	\
 			drivers/renesas/common/emmc/emmc_interrupt.c	\
 			drivers/renesas/common/emmc/emmc_utility.c	\

plat/renesas/rcar/platform.mk

@@ -322,7 +322,6 @@ BL2_SOURCES	+=	plat/renesas/rcar/aarch64/platform_common.c	\
 			plat/renesas/rcar/bl2_cpg_init.c		\
 			drivers/renesas/rcar/auth/auth_mod.c		\
 			drivers/renesas/rcar/rpc/rpc_driver.c		\
-			drivers/renesas/rcar/dma/dma_driver.c		\
 			drivers/renesas/rcar/avs/avs_driver.c		\
 			drivers/renesas/rcar/board/board.c