dt-bindings: arm: Add Data Modul i.MX8M Plus eDM SBC

Add DT compatible for Data Modul i.MX8M Plus eDM SBC board.
This is an evaluation board for various custom display units.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Author: Marek Vasut

Documentation/devicetree/bindings/arm/fsl.yaml

@@ -1016,6 +1016,7 @@ properties:
         items:
           - enum:
               - beacon,imx8mp-beacon-kit  # i.MX8MP Beacon Development Kit
+              - dmo,imx8mp-data-modul-edm-sbc # i.MX8MP eDM SBC
               - fsl,imx8mp-evk            # i.MX8MP EVK Board
               - gateworks,imx8mp-gw74xx   # i.MX8MP Gateworks Board
               - polyhex,imx8mp-debix      # Polyhex Debix boards