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/include/platform_def.h b/plat/mediatek/mt8192/include/platform_def.h
index f68015a..5ff013e 100644
--- a/plat/mediatek/mt8192/include/platform_def.h
+++ b/plat/mediatek/mt8192/include/platform_def.h
@@ -39,6 +39,14 @@
 #define SYS_COUNTER_FREQ_IN_MHZ      13
 
 /*******************************************************************************
+ * GIC-400 & interrupt handling related constants
+ ******************************************************************************/
+
+/* Base MTK_platform compatible GIC memory map */
+#define BASE_GICD_BASE        MT_GIC_BASE
+#define MT_GIC_RDIST_BASE     (MT_GIC_BASE + 0x40000)
+
+/*******************************************************************************
  * Platform binary types for linking
  ******************************************************************************/
 #define PLATFORM_LINKER_FORMAT      "elf64-littleaarch64"