arm64: dts: enable fspi in imx8mm dts

Pull in downstream patch from NXP repository to enable fspi device.
Signed-off-by: Han Xu <han.xu@nxp.com>
Signed-off-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8mm.dtsi

@@ -560,7 +560,8 @@ aips3: bus@30800000 {
 			compatible = "simple-bus";
 			#address-cells = <1>;
 			#size-cells = <1>;
-			ranges = <0x30800000 0x30800000 0x400000>;
+			ranges = <0x30800000 0x30800000 0x400000>,
+				 <0x8000000 0x8000000 0x10000000>;
 
 			ecspi1: spi@30820000 {
 				compatible = "fsl,imx8mm-ecspi", "fsl,imx51-ecspi";
@@ -762,6 +763,19 @@ usdhc3: mmc@30b60000 {
 				status = "disabled";
 			};
 
+			flexspi: spi@30bb0000 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				compatible = "nxp,imx8mm-fspi";
+				reg = <0x30bb0000 0x10000>, <0x8000000 0x10000000>;
+				reg-names = "fspi_base", "fspi_mmap";
+				interrupts = <GIC_SPI 107 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&clk IMX8MM_CLK_QSPI_ROOT>,
+					 <&clk IMX8MM_CLK_QSPI_ROOT>;
+				clock-names = "fspi", "fspi_en";
+				status = "disabled";
+			};
+
 			sdma1: dma-controller@30bd0000 {
 				compatible = "fsl,imx8mm-sdma", "fsl,imx8mq-sdma";
 				reg = <0x30bd0000 0x10000>;