MLK-18243-12 arm: imx8m: add cpu revision for i.MX8MM

Add cpu revision for i.MX8MM
Add helper function

Change-Id: I6580ce4f3c6bb52e1b9fec6312347cc6d6195dc6
Signed-off-by: Peng Fan <peng.fan@nxp.com>
diff --git a/arch/arm/include/asm/imx-common/sys_proto.h b/arch/arm/include/asm/imx-common/sys_proto.h
index 431e297..394a800 100644
--- a/arch/arm/include/asm/imx-common/sys_proto.h
+++ b/arch/arm/include/asm/imx-common/sys_proto.h
@@ -3,6 +3,7 @@
  * Stefano Babic, DENX Software Engineering, sbabic@denx.de.
  *
  * Copyright (C) 2016 Freescale Semiconductor, Inc.
+ * Copyright 2018 NXP
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */
@@ -44,6 +45,8 @@
 
 #define is_mx7ulp() (is_cpu_type(MXC_CPU_MX7ULP))
 
+#define is_imx8mq() (is_cpu_type(MXC_CPU_IMX8MQ))
+#define is_imx8mm() (is_cpu_type(MXC_CPU_IMX8MM))
 #define is_imx8qm() (is_cpu_type(MXC_CPU_IMX8QM))
 #define is_imx8qxp() (is_cpu_type(MXC_CPU_IMX8QXP))
 #define is_imx8dx() (is_cpu_type(MXC_CPU_IMX8DX))