dt-bindings: arm: fsl: add PHYTEC phyGATE Tauri i.MX6 ULL

Add devicetree bindings for phyGATE Tauri board with phyCORE-i.MX6 ULL.
Signed-off-by: Andrej Picej <andrej.picej@norik.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Documentation/devicetree/bindings/arm/fsl.yaml

@@ -662,6 +662,15 @@ properties:
           - const: phytec,imx6ull-pcl063  # PHYTEC phyCORE-i.MX 6ULL
           - const: fsl,imx6ull
 
+      - description: i.MX6ULL PHYTEC phyGATE-Tauri
+        items:
+          - enum:
+              - phytec,imx6ull-phygate-tauri-emmc
+              - phytec,imx6ull-phygate-tauri-nand
+          - const: phytec,imx6ull-phygate-tauri # PHYTEC phyGATE-Tauri with i.MX6 ULL
+          - const: phytec,imx6ull-pcl063        # PHYTEC phyCORE-i.MX 6ULL
+          - const: fsl,imx6ull
+
       - description: i.MX6ULL Boards with Toradex Colibri iMX6ULL Modules
         items:
           - enum: