arm64: dts: imx8mn-beacon-som: Enable QSPI on SOM

There is a QSPI chip connected to the FlexSPI bus.  Enable it.
Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8mn-beacon-som.dtsi

@@ -7,6 +7,7 @@ / {
 	aliases {
 		rtc0 = &rtc;
 		rtc1 = &snvs_rtc;
+		spi0 = &flexspi;
 	};
 
 	usdhc1_pwrseq: usdhc1_pwrseq {
@@ -89,6 +90,22 @@ ethphy0: ethernet-phy@0 {
 	};
 };
 
+&flexspi {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_flexspi>;
+	status = "okay";
+
+	flash@0 {
+		reg = <0>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "jedec,spi-nor";
+		spi-max-frequency = <80000000>;
+		spi-tx-bus-width = <4>;
+		spi-rx-bus-width = <4>;
+	};
+};
+
 &i2c1 {
 	clock-frequency = <400000>;
 	pinctrl-names = "default";
@@ -318,6 +335,17 @@ MX8MN_IOMUXC_I2C3_SDA_I2C3_SDA		0x400001c3
 		>;
 	};
 
+	pinctrl_flexspi: flexspigrp {
+		fsl,pins = <
+			MX8MN_IOMUXC_NAND_ALE_QSPI_A_SCLK               0x1c2
+			MX8MN_IOMUXC_NAND_CE0_B_QSPI_A_SS0_B            0x82
+			MX8MN_IOMUXC_NAND_DATA00_QSPI_A_DATA0           0x82
+			MX8MN_IOMUXC_NAND_DATA01_QSPI_A_DATA1           0x82
+			MX8MN_IOMUXC_NAND_DATA02_QSPI_A_DATA2           0x82
+			MX8MN_IOMUXC_NAND_DATA03_QSPI_A_DATA3           0x82
+		>;
+	};
+
 	pinctrl_pmic: pmicirqgrp {
 		fsl,pins = <
 			MX8MN_IOMUXC_GPIO1_IO03_GPIO1_IO3		0x141