feat(plat/mdeiatek/mt8195): add display port control in SiP service

MTK display port mute/unmute control registers need to be
set in secure world.

Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Change-Id: Iec73650e937bd20e25c18fa28d55ae29e68b10d3
diff --git a/plat/mediatek/mt8195/include/platform_def.h b/plat/mediatek/mt8195/include/platform_def.h
index f6eb742..eaf5985 100644
--- a/plat/mediatek/mt8195/include/platform_def.h
+++ b/plat/mediatek/mt8195/include/platform_def.h
@@ -26,6 +26,14 @@
 #define SPM_BASE		(IO_PHYS + 0x00006000)
 
 /*******************************************************************************
+ * DP/eDP related constants
+ ******************************************************************************/
+#define eDP_SEC_BASE		(IO_PHYS + 0x0C504000)
+#define DP_SEC_BASE		(IO_PHYS + 0x0C604000)
+#define eDP_SEC_SIZE		0x1000
+#define DP_SEC_SIZE		0x1000
+
+/*******************************************************************************
  * GPIO related constants
  ******************************************************************************/
 #define GPIO_BASE		(IO_PHYS + 0x00005000)