Merge branch 'next'

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

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+***************************
+Freescale i.MX8QM MEK board
+***************************
+
+This file documents the Buildroot support for the NXP i.MX8QM MEK board.
+
+You will find a reference to the board on nxp.com:
+https://www.nxp.com/design/development-boards/i.mx-evaluation-and-development-boards/i.mx-8quadmax-multisensory-enablement-kit-mek:MCIMX8QM-CPU
+
+You can also find the get started guide here:
+https://www.nxp.com/document/guide/get-started-with-the-i.mx-8quadmax-mek:GS-iMX-8QM-MEK
+
+Build
+=====
+
+First, configure Buildroot for the i.MX8QM MEK board:
+
+$ make freescale_imx8qmmek_defconfig
+
+Build all components:
+
+$ make
+
+You will find in output/images/ the following files:
+  - ahab-container.img
+  - bl31.bin
+  - boot.vfat
+  - fsl-imx8qm-mek.dtb
+  - Image
+  - imx8-boot-sd.bin
+  - mkimg.commit
+  - mx8qm-mek-scfw-tcm.bin
+  - mx8qm-val-scfw-tcm.bin
+  - mx8qm-a0-ddr4-scfw-tcm.bin
+  - mx8qm-a0-mek-scfw-tcm.bin
+  - mx8qm-a0-val-scfw-tcm.bin
+  - mx8qm-ddr4-scfw-tcm.bin
+  - rootfs.ext2
+  - rootfs.ext4
+  - rootfs.tar
+  - sdcard.img
+  - u-boot-atf.bin
+  - u-boot.bin
+  - u-boot-hash.bin
+
+Create a bootable SD card
+=========================
+
+To determine the device associated to the SD card have a look in the
+/proc/partitions file:
+
+  cat /proc/partitions
+
+Buildroot prepares a bootable "sdcard.img" image in the output/images/
+directory, ready to be dumped on a SD card. Launch the following
+command as root:
+
+  dd if=output/images/sdcard.img of=/dev/<your-sd-device>
+
+*** WARNING! This will destroy all the card content. Use with care! ***
+
+For details about the medium image layout, see the definition in
+board/freescale/common/imx/genimage.cfg.template_imx8.
+
+Boot the i.MX8QM MEK board
+==========================
+
+To boot your newly created system:
+- insert the SD card in the SD slot of the board;
+- Configure the boot switch as follows:
+SW2:	OFF	OFF	ON	ON	OFF	OFF
+- put a micro USB cable into the Debug USB Port and connect using a terminal
+  emulator at 115200 bps, 8n1;
+- power on the board.
+
+Enjoy!