mediatek: mt8183: add MTK MCDI driver

Add MCDI driver for power saving.

Change-Id: I93ecff4d7581f678be09dd8fb5dfaaccd5f2c22c
diff --git a/plat/mediatek/mt8183/platform.mk b/plat/mediatek/mt8183/platform.mk
index 5bf504b..efa7e9e 100644
--- a/plat/mediatek/mt8183/platform.mk
+++ b/plat/mediatek/mt8183/platform.mk
@@ -9,6 +9,7 @@
 
 PLAT_INCLUDES := -I${MTK_PLAT}/common/                            \
                  -I${MTK_PLAT_SOC}/drivers/                       \
+                 -I${MTK_PLAT_SOC}/drivers/mcdi/                  \
                  -I${MTK_PLAT_SOC}/drivers/spmc/                  \
                  -I${MTK_PLAT_SOC}/drivers/gpio/                  \
                  -I${MTK_PLAT_SOC}/drivers/pmic/                  \
@@ -48,6 +49,7 @@
                    ${MTK_PLAT_SOC}/drivers/mcsi/mcsi.c                   \
                    ${MTK_PLAT_SOC}/drivers/pmic/pmic.c                   \
                    ${MTK_PLAT_SOC}/drivers/rtc/rtc.c                     \
+                   ${MTK_PLAT_SOC}/drivers/mcdi/mtk_mcdi.c               \
                    ${MTK_PLAT_SOC}/drivers/spmc/mtspmc.c                 \
                    ${MTK_PLAT_SOC}/drivers/spm/spm.c                     \
                    ${MTK_PLAT_SOC}/drivers/spm/spm_pmic_wrap.c           \