plat: renesas: aarch64: Move to common

Move plat aarch64 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: I66265e5e68bfcf5c3534965fb3549a145c782b47
diff --git a/plat/renesas/common/common.mk b/plat/renesas/common/common.mk
index b342bdc..cb0bb07 100644
--- a/plat/renesas/common/common.mk
+++ b/plat/renesas/common/common.mk
@@ -78,6 +78,8 @@
 			lib/cpus/aarch64/cortex_a57.S			\
 			${LIBFDT_SRCS}					\
 			common/desc_image_load.c			\
+			plat/renesas/common/aarch64/platform_common.c	\
+			plat/renesas/common/aarch64/plat_helpers.S	\
 			drivers/renesas/common/console/rcar_printf.c	\
 			drivers/renesas/common/scif/scif.S		\
 			drivers/renesas/common/common.c			\
@@ -103,6 +105,8 @@
 			lib/cpus/aarch64/cortex_a53.S			\
 			lib/cpus/aarch64/cortex_a57.S			\
 			plat/common/plat_psci_common.c			\
+			plat/renesas/common/aarch64/plat_helpers.S	\
+			plat/renesas/common/aarch64/platform_common.c	\
 			drivers/renesas/common/console/rcar_console.S	\
 			drivers/renesas/common/console/rcar_printf.c	\
 			drivers/renesas/common/delay/micro_delay.c	\