ARM: dts: imx6q-cm-fx6: Remove invalid SPI flash entry

"st,m25p" is not a valid compatible according to jedec,spi-nor.yaml.

Remove it.

Signed-off-by: Fabio Estevam <festevam@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Author: Fabio Estevam

arch/arm/boot/dts/nxp/imx/imx6q-cm-fx6.dts

@@ -263,7 +263,7 @@
 	flash@0 {
 		#address-cells = <1>;
 		#size-cells = <1>;
-		compatible = "st,m25p", "jedec,spi-nor";
+		compatible = "jedec,spi-nor";
 		spi-max-frequency = <20000000>;
 		reg = <0>;
 	};