fix(plat/rcar3): fix source file to make about GICv2

Changed the plat/renesas/common/common.mk to change the source files
about GICv2 by include gicv2.mk, because gic_common.c has deprecated.

Signed-off-by: Hideyuki Nitta <hideyuki.nitta.jf@hitachi.com>
Signed-off-by: Toshiyuki Ogasahara <toshiyuki.ogasahara.bo@hitachi.com>
Signed-off-by: Yoshifumi Hosoya <yoshifumi.hosoya.wj@renesas.com>
Change-Id: Iaa7eae6b2c1dd79a05339325e6bc422d87bce49e
diff --git a/plat/renesas/common/common.mk b/plat/renesas/common/common.mk
index fafce98..7f69635 100644
--- a/plat/renesas/common/common.mk
+++ b/plat/renesas/common/common.mk
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2018-2020, Renesas Electronics Corporation. All rights reserved.
+# Copyright (c) 2018-2021, Renesas Electronics Corporation. All rights reserved.
 #
 # SPDX-License-Identifier: BSD-3-Clause
 #
@@ -77,9 +77,8 @@
 PLAT_BL_COMMON_SOURCES	:=	drivers/renesas/common/iic_dvfs/iic_dvfs.c \
 				plat/renesas/common/rcar_common.c
 
-RCAR_GIC_SOURCES	:=	drivers/arm/gic/common/gic_common.c	\
-				drivers/arm/gic/v2/gicv2_main.c		\
-				drivers/arm/gic/v2/gicv2_helpers.c	\
+include drivers/arm/gic/v2/gicv2.mk
+RCAR_GIC_SOURCES	:=	${GICV2_SOURCES} \
 				plat/common/plat_gicv2.c
 
 BL2_SOURCES	+=	${RCAR_GIC_SOURCES}				\