imx: imx8mm: Add support for the Kontron N8010 i.MX8M-Mini boards and modules

The Kontron SL i.MX8MM (N8010) by Kontron Electronics GmbH is a SoM
module with an i.MX8M-Mini SoC, LPDDR4 RAM, SPI NOR, eMMC and PMIC.

The matching evaluation board has 2 Ethernets, USB 2.0, HDMI/LVDS,
SD card, CAN, RS485 and much more.

Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>