drivers: renesas: delay: Move to common

Move delay 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: I5e806bd0e0a0a4b436048513b7089db90ff9805f
diff --git a/plat/renesas/common/common.mk b/plat/renesas/common/common.mk
index cdcbc21..dda7c89 100644
--- a/plat/renesas/common/common.mk
+++ b/plat/renesas/common/common.mk
@@ -84,6 +84,7 @@
 			drivers/renesas/common/io/io_emmcdrv.c		\
 			drivers/renesas/common/io/io_memdrv.c		\
 			drivers/renesas/common/io/io_rcar.c		\
+			drivers/renesas/common/delay/micro_delay.c	\
 			drivers/renesas/common/emmc/emmc_interrupt.c	\
 			drivers/renesas/common/emmc/emmc_utility.c	\
 			drivers/renesas/common/emmc/emmc_mount.c	\
@@ -98,6 +99,7 @@
 			plat/common/plat_psci_common.c			\
 			drivers/renesas/common/console/rcar_console.S	\
 			drivers/renesas/common/console/rcar_printf.c	\
+			drivers/renesas/common/delay/micro_delay.c	\
 			drivers/renesas/common/pwrc/call_sram.S		\
 			drivers/renesas/common/pwrc/pwrc.c		\
 			drivers/renesas/common/common.c			\