ARM: dts: r8a7742: Add QSPI support

Add QSPI DT node to R8A7742 SoC dtsi.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Chris Paterson <Chris.Paterson2@renesas.com>
Link: https://lore.kernel.org/r/20200812150048.27721-3-prabhakar.mahadev-lad.rj@bp.renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

arch/arm/boot/dts/r8a7742.dtsi

@@ -701,6 +701,22 @@ avb: ethernet@e6800000 {
 			status = "disabled";
 		};
 
+		qspi: spi@e6b10000 {
+			compatible = "renesas,qspi-r8a7742", "renesas,qspi";
+			reg = <0 0xe6b10000 0 0x2c>;
+			interrupts = <GIC_SPI 184 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 917>;
+			dmas = <&dmac0 0x17>, <&dmac0 0x18>,
+			       <&dmac1 0x17>, <&dmac1 0x18>;
+			dma-names = "tx", "rx", "tx", "rx";
+			power-domains = <&sysc R8A7742_PD_ALWAYS_ON>;
+			resets = <&cpg 917>;
+			num-cs = <1>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
 		scifa0: serial@e6c40000 {
 			compatible = "renesas,scifa-r8a7742",
 				     "renesas,rcar-gen2-scifa", "renesas,scifa";