arm64: dts: imx8ulp: add flexspi node

Add flexspi node, flexspi has a special memory region mapped to
0x60000000~0x6fffffff. This region is for AHB usage. So add this region
to SoC ranges.

Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8ulp.dtsi

@@ -195,7 +195,8 @@
 		compatible = "simple-bus";
 		#address-cells = <1>;
 		#size-cells = <1>;
-		ranges = <0x0 0x0 0x0 0x40000000>;
+		ranges = <0x0 0x0 0x0 0x40000000>,
+			 <0x60000000 0x0 0x60000000 0x1000000>;
 
 		s4muap: mailbox@27020000 {
 			compatible = "fsl,imx8ulp-mu-s4";
@@ -350,6 +351,21 @@
 				#reset-cells = <1>;
 			};
 
+			flexspi2: spi@29810000 {
+				compatible = "nxp,imx8mm-fspi";
+				reg = <0x29810000 0x10000>, <0x60000000 0x10000000>;
+				reg-names = "fspi_base", "fspi_mmap";
+				#address-cells = <1>;
+				#size-cells = <0>;
+				interrupts = <GIC_SPI 141 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&pcc4 IMX8ULP_CLK_FLEXSPI2>,
+					 <&pcc4 IMX8ULP_CLK_FLEXSPI2>;
+				clock-names = "fspi", "fspi_en";
+				assigned-clocks = <&pcc4 IMX8ULP_CLK_FLEXSPI2>;
+				assigned-clock-parents = <&cgc1 IMX8ULP_CLK_SPLL3_PFD3_DIV2>;
+				status = "disabled";
+			};
+
 			lpi2c6: i2c@29840000 {
 				compatible = "fsl,imx8ulp-lpi2c", "fsl,imx7ulp-lpi2c";
 				reg = <0x29840000 0x10000>;