imx8qm_mek: switch to use container image

Because FIT could not be used for AHAB secure boot on i.MX8,
so switch to use container image that could let SPL verify
ATF and U-Boot with AHAB.

Enable HUSH_PARSER in defconfig to make run netboot could work.

Note: The AHAB related code has not been added.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
diff --git a/board/freescale/imx8qm_mek/uboot-container.cfg b/board/freescale/imx8qm_mek/uboot-container.cfg
new file mode 100644
index 0000000..6cc47cd
--- /dev/null
+++ b/board/freescale/imx8qm_mek/uboot-container.cfg
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2019 NXP
+ */
+
+#define __ASSEMBLY__
+
+/* This file is to create a container image could be loaded by SPL */
+BOOT_FROM SD 0x400
+SOC_TYPE IMX8QM
+CONTAINER
+IMAGE A35 bl31.bin	0x80000000
+IMAGE A35 u-boot.bin	CONFIG_SYS_TEXT_BASE