dt-bindings: usb: ci-hdrc-usb2: add i.MX8MM compatible

Add fsl,imx8mm-usb compatible for i.MX8MM
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221223031012.92932-1-peng.fan@oss.nxp.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt

@@ -11,6 +11,7 @@ Required properties:
 	"fsl,imx6ul-usb"
 	"fsl,imx7d-usb"
 	"fsl,imx7ulp-usb"
+	"fsl,imx8mm-usb"
 	"lsi,zevio-usb"
 	"qcom,ci-hdrc"
 	"chipidea,usb2"