arm: dts: lx2160a: Use flexspi in octal I/O mode

Configure RX and TX bus-width values to use flexspi in octal I/O mode.
If bus-widths are not specified, then single I/O mode is set by default.

Signed-off-by: Kuldeep Singh <kuldeep.singh@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/arch/arm/dts/fsl-lx2160a-qds.dts b/arch/arm/dts/fsl-lx2160a-qds.dts
index 33bedae..592fd59 100644
--- a/arch/arm/dts/fsl-lx2160a-qds.dts
+++ b/arch/arm/dts/fsl-lx2160a-qds.dts
@@ -58,6 +58,8 @@
 		compatible = "jedec,spi-nor";
 		spi-max-frequency = <50000000>;
 		reg = <0>;
+		spi-rx-bus-width = <8>;
+		spi-tx-bus-width = <1>;
 	};
 };