Merge tag 'u-boot-imx-20210125' of https://gitlab.denx.de/u-boot/custodians/u-boot-imx

Changes for 2020.04
-------------------

- new board:
	Phytec phyCORE-i.MX8MP
	i.MX8MN Beacon EmbeddedWorks devkit

- Fixes:
	several nanbcb fixes
	fix for imx8mm_beacon
- further switch to distro boot commands
- DM:
	DM Ether for MX6UL

CI:

https://gitlab.denx.de/u-boot/custodians/u-boot-imx/-/pipelines/6013

diff --cc arch/arm/dts/Makefile
Simple merge