dt-bindings: arm: Add Gateworks i.MX8M Mini GW7905-0x board

Add DT compatible string for a Gateworks GW7905-0x board based on
the i.MX8M Mini from NXP.
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Documentation/devicetree/bindings/arm/fsl.yaml

@@ -909,6 +909,7 @@ properties:
               - fsl,imx8mm-evk            # i.MX8MM EVK Board
               - fsl,imx8mm-evkb           # i.MX8MM EVKB Board
               - gateworks,imx8mm-gw7904
+              - gateworks,imx8mm-gw7905-0x # i.MX8MM Gateworks Board
               - gw,imx8mm-gw71xx-0x       # i.MX8MM Gateworks Development Kit
               - gw,imx8mm-gw72xx-0x       # i.MX8MM Gateworks Development Kit
               - gw,imx8mm-gw73xx-0x       # i.MX8MM Gateworks Development Kit