Add qspi for socfpga.dtsi

Author: Dinh Nguyen

arch/arm/boot/dts/socfpga.dtsi

@@ -768,6 +768,27 @@
 			};
 		};
 
+
+		l3regs@0xff800000 {
+			compatible = "altr,l3regs", "syscon";
+			reg = <0xff800000 0x1000>;
+		};
+
+		qspi: spi@ff705000 {
+			compatible = "cadence,qspi";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0xff705000 0x1000>,
+			<0xffa00000 0x1000>;
+			interrupts = <0 151 4>;
+			clocks = <&qspi_clk>;
+			ext-decoder = <0>;  /* external decoder */
+			num-chipselect = <4>;
+			fifo-depth = <128>;
+			bus-num = <2>;
+			status = "disabled";
+		};
+
 		spi0: spi@fff00000 {
 			compatible = "snps,dw-spi-mmio";
 			#address-cells = <1>;