feat(mt8188): add EMI MPU basic drivers

EMI MPU stands for external memory interface memory protect unit.
MT8188 supports 32 regions and 16 domains.

Change-Id: I9bbeb355665401cc71dda6db22157d9d751570d1
diff --git a/plat/mediatek/mt8188/platform.mk b/plat/mediatek/mt8188/platform.mk
index 97f303c..11e75e8 100644
--- a/plat/mediatek/mt8188/platform.mk
+++ b/plat/mediatek/mt8188/platform.mk
@@ -26,6 +26,7 @@
 MODULES-y += $(MTK_PLAT)/drivers/cirq
 MODULES-y += $(MTK_PLAT)/drivers/dcm
 MODULES-y += $(MTK_PLAT)/drivers/dp
+MODULES-y += $(MTK_PLAT)/drivers/emi_mpu
 MODULES-y += $(MTK_PLAT)/drivers/gic600
 MODULES-y += $(MTK_PLAT)/drivers/gpio
 MODULES-y += $(MTK_PLAT)/drivers/iommu