mediatek: mt8183: add mcsi driver

add mcsi driver to support cache coherence.

Change-Id: I94f5922783e5dbc6b7e92aa06464bc1f0177f00a
Signed-off-by: kenny liang <kenny.liang@mediatek.com>
diff --git a/plat/mediatek/mt8183/platform.mk b/plat/mediatek/mt8183/platform.mk
index 607e7e3..8c8e2fe 100644
--- a/plat/mediatek/mt8183/platform.mk
+++ b/plat/mediatek/mt8183/platform.mk
@@ -8,6 +8,7 @@
 MTK_PLAT_SOC  := ${MTK_PLAT}/${PLAT}
 
 PLAT_INCLUDES := -I${MTK_PLAT}/common/                            \
+                 -I${MTK_PLAT_SOC}/drivers/                       \
                  -I${MTK_PLAT_SOC}/include/
 
 PLAT_BL_COMMON_SOURCES := lib/xlat_tables/aarch64/xlat_tables.c       \
@@ -32,6 +33,7 @@
                    ${MTK_PLAT}/common/mtk_plat_common.c                  \
                    ${MTK_PLAT_SOC}/aarch64/plat_helpers.S                \
                    ${MTK_PLAT_SOC}/aarch64/platform_common.c             \
+                   ${MTK_PLAT_SOC}/drivers/mcsi/mcsi.c                   \
                    ${MTK_PLAT_SOC}/plat_pm.c                             \
                    ${MTK_PLAT_SOC}/plat_topology.c                       \
                    ${MTK_PLAT_SOC}/plat_mt_gic.c                         \