dt-bindings: arm: fsl: Add MYiR Tech boards

Add entries for MYiR Tech imx6ULL eval boards.
Signed-off-by: Parthiban Nallathambi <parthiban@linumiz.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Documentation/devicetree/bindings/arm/fsl.yaml

@@ -272,6 +272,7 @@ properties:
               - armadeus,imx6ull-opos6uldev # OPOS6UL (i.MX6ULL) SoM on OPOS6ULDev board
               - fsl,imx6ull-14x14-evk     # i.MX6 UltraLiteLite 14x14 EVK Board
               - kontron,imx6ull-n6411-som # Kontron N6411 SOM
+              - myir,imx6ull-mys-6ulx-eval # MYiR Tech iMX6ULL Evaluation Board
               - toradex,colibri-imx6ull-eval            # Colibri iMX6ULL Module on Colibri Evaluation Board
               - toradex,colibri-imx6ull-wifi-eval       # Colibri iMX6ULL Wi-Fi / Bluetooth Module on Colibri Evaluation Board
           - const: fsl,imx6ull