mediatek: mt8192: add GIC600 support

1. Implement GIC600 driver support and init
2. Remove unused debug info

Change-Id: I30c08c531e705debc029071e4e970048e261c386
diff --git a/plat/mediatek/mt8192/platform.mk b/plat/mediatek/mt8192/platform.mk
index f4ee7e7..c972ac6 100644
--- a/plat/mediatek/mt8192/platform.mk
+++ b/plat/mediatek/mt8192/platform.mk
@@ -10,6 +10,7 @@
 PLAT_INCLUDES := -I${MTK_PLAT}/common/                            \
                  -I${MTK_PLAT_SOC}/include/
 
+GICV3_SUPPORT_GIC600        :=      1
 include drivers/arm/gic/v3/gicv3.mk
 include lib/xlat_tables_v2/xlat_tables.mk
 
@@ -30,7 +31,8 @@
                    ${MTK_PLAT_SOC}/aarch64/plat_helpers.S                \
                    ${MTK_PLAT_SOC}/bl31_plat_setup.c                     \
                    ${MTK_PLAT_SOC}/plat_pm.c                             \
-                   ${MTK_PLAT_SOC}/plat_topology.c
+                   ${MTK_PLAT_SOC}/plat_topology.c                       \
+                   ${MTK_PLAT_SOC}/plat_mt_gic.c
 
 
 # Configs for A76 and A55