mediatek: mt8183: add MTK MCDI driver

Add MCDI driver for power saving.

Change-Id: I93ecff4d7581f678be09dd8fb5dfaaccd5f2c22c
diff --git a/plat/mediatek/mt8183/bl31_plat_setup.c b/plat/mediatek/mt8183/bl31_plat_setup.c
index fd3a5b0..ec387f4 100644
--- a/plat/mediatek/mt8183/bl31_plat_setup.c
+++ b/plat/mediatek/mt8183/bl31_plat_setup.c
@@ -16,6 +16,7 @@
 #include <mt_gic_v3.h>
 #include <lib/coreboot.h>
 #include <lib/mmio.h>
+#include <mtk_mcdi.h>
 #include <mtk_plat_common.h>
 #include <mtspmc.h>
 #include <plat_debug.h>
@@ -148,6 +149,7 @@
 	spmc_init();
 #endif
 	spm_boot_init();
+	mcdi_init();
 }
 
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