feat(mt8188): add emi mpu protection for APU secure memory

Add emi mpu protection of APU secure memory.

Change-Id: I949cfce97565d8a313caae4ea41af60a171042a6
diff --git a/plat/mediatek/drivers/apusys/apusys.c b/plat/mediatek/drivers/apusys/apusys.c
index aa2c900..58853ca 100644
--- a/plat/mediatek/drivers/apusys/apusys.c
+++ b/plat/mediatek/drivers/apusys/apusys.c
@@ -53,6 +53,9 @@
 	case MTK_APUSYS_KERNEL_OP_DEVAPC_INIT_RCX:
 		ret = apusys_devapc_rcx_init();
 		break;
+	case MTK_APUSYS_KERNEL_OP_APUSYS_RV_SETUP_SEC_MEM:
+		ret = apusys_kernel_apusys_rv_setup_sec_mem();
+		break;
 	default:
 		ERROR(MODULE_TAG "%s unknown request_ops = %x\n", MODULE_TAG, request_ops);
 		break;