ARM: dts: imx7s-warp: Pass OV2680 link-frequencies

Since commit 63b0cd30 ("media: ov2680: Add bus-cfg / endpoint
property verification") the ov2680 no longer probes on a imx7s-warp7:

ov2680 1-0036: error -EINVAL: supported link freq 330000000 not found
ov2680 1-0036: probe with driver ov2680 failed with error -22

Fix it by passing the required 'link-frequencies' property as
recommended by:

https://www.kernel.org/doc/html/v6.9-rc1/driver-api/media/camera-sensor.html#handling-clocks

Cc: stable@vger.kernel.org
Fixes: 63b0cd30 ("media: ov2680: Add bus-cfg / endpoint property verification")
Signed-off-by: Fabio Estevam <festevam@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/nxp/imx/imx7s-warp.dts

@@ -210,6 +210,7 @@ ov2680_to_mipi: endpoint {
 				remote-endpoint = <&mipi_from_sensor>;
 				clock-lanes = <0>;
 				data-lanes = <1>;
+				link-frequencies = /bits/ 64 <330000000>;
 			};
 		};
 	};