arm64: dts: imx8mm-kontron: Add overlay for extension board
The extension board for the Kontron BL i.MX8MM provides additional connectivity with the interfaces listed below. This change adds support for some of these.
- M.2 PCIe Slot
- SIM Slot for M.2 Modems
- Raspberry Pi Pin Header
- I2C
- I2S/SAI
- SDIO
- SPI
- UART
- GPIOs
- QWIIC I2C Conenctor
- CSI Camera Connector
- USB Host
Signed-off-by: Frieder Schrempf frieder.schrempf@kontron.de