mediatek: mt8195: Add MCDI drivers

Add MCDI related drivers to handle CPU powered on/off in CPU suspend.

Signed-off-by: James Liao <jamesjj.liao@mediatek.com>
Change-Id: I6a6f9bf5d1d8bda1ee603d8bf3fc206437de7ad8
diff --git a/plat/mediatek/mt8195/include/platform_def.h b/plat/mediatek/mt8195/include/platform_def.h
index 1055128..307187e 100644
--- a/plat/mediatek/mt8195/include/platform_def.h
+++ b/plat/mediatek/mt8195/include/platform_def.h
@@ -20,6 +20,8 @@
 #define MTK_DEV_RNG1_SIZE	0xa110000
 #define MTK_DEV_RNG2_BASE	MT_GIC_BASE
 #define MTK_DEV_RNG2_SIZE	0x600000
+#define MTK_MCDI_SRAM_BASE	0x11B000
+#define MTK_MCDI_SRAM_MAP_SIZE	0x1000
 
 #define SPM_BASE		(IO_PHYS + 0x00006000)