Get rid of use of old GIC APIs

Signed-off-by: Koan-Sin Tan <koansin.tan@gmail.com>
diff --git a/plat/mediatek/mt8173/platform.mk b/plat/mediatek/mt8173/platform.mk
index 54ca475..e59125a 100644
--- a/plat/mediatek/mt8173/platform.mk
+++ b/plat/mediatek/mt8173/platform.mk
@@ -33,6 +33,8 @@
 
 PLAT_INCLUDES		:=	-I${MTK_PLAT}/common/				\
 				-I${MTK_PLAT}/common/drivers/uart/		\
+				-Iinclude/plat/arm/common			\
+				-Iinclude/plat/arm/common/aarch64		\
 				-I${MTK_PLAT_SOC}/drivers/crypt/		\
 				-I${MTK_PLAT_SOC}/drivers/mtcmos/		\
 				-I${MTK_PLAT_SOC}/drivers/pmic/			\
@@ -44,12 +46,13 @@
 PLAT_BL_COMMON_SOURCES	:=	lib/xlat_tables/xlat_tables_common.c		\
 				lib/xlat_tables/aarch64/xlat_tables.c		\
 				plat/common/aarch64/plat_common.c		\
-				plat/common/plat_gic.c
+				plat/arm/common/arm_gicv2.c			\
+				plat/common/plat_gicv2.c
 
 BL31_SOURCES		+=	drivers/arm/cci/cci.c				\
-				drivers/arm/gic/arm_gic.c			\
-				drivers/arm/gic/gic_v2.c			\
-				drivers/arm/gic/gic_v3.c			\
+				drivers/arm/gic/common/gic_common.c		\
+				drivers/arm/gic/v2/gicv2_main.c			\
+				drivers/arm/gic/v2/gicv2_helpers.c		\
 				drivers/console/aarch64/console.S		\
 				drivers/delay_timer/delay_timer.c		\
 				drivers/delay_timer/generic_delay_timer.c	\
@@ -73,7 +76,6 @@
 				${MTK_PLAT_SOC}/drivers/spm/spm_mcdi.c		\
 				${MTK_PLAT_SOC}/drivers/spm/spm_suspend.c	\
 				${MTK_PLAT_SOC}/drivers/timer/mt_cpuxgpt.c	\
-				${MTK_PLAT_SOC}/plat_mt_gic.c			\
 				${MTK_PLAT_SOC}/plat_pm.c			\
 				${MTK_PLAT_SOC}/plat_sip_calls.c		\
 				${MTK_PLAT_SOC}/plat_topology.c			\