dt-bindings: arm: Document 96Boards Meerkat96 devicetree binding

Document 96Boards Meerkat96 devicetree binding based on i.MX7D SoC.
Reviewed-by: NRob Herring <robh@kernel.org>
Signed-off-by: NManivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: NShawn Guo <shawnguo@kernel.org>

Documentation/devicetree/bindings/arm/fsl.yaml

@@ -156,6 +156,7 @@ properties:
         items:
           - enum:
               - fsl,imx7d-sdb             # i.MX7 SabreSD Board
+              - novtech,imx7d-meerkat96   # i.MX7 Meerkat96 Board
               - tq,imx7d-mba7             # i.MX7D TQ MBa7 with TQMa7D SoM
               - zii,imx7d-rpu2            # ZII RPU2 Board
           - const: fsl,imx7d