ARM: dts: rmobile: Add Renesas RPC HF/QSPI DT node to R8A77990

Add device tree nodes for the Renesas RPC HF/QSPI controller
to R8A77990 E3.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

arch/arm/dts/r8a77990.dtsi

@@ -269,6 +269,14 @@
 			compatible = "renesas,prr";
 			reg = <0 0xfff00044 0 4>;
 		};
+
+		rpc: rpc@0xee200000 {
+			compatible = "renesas,rpc-r8a77990", "renesas,rpc";
+			reg = <0 0xee200000 0 0x100>, <0 0x08000000 0 0>;
+			clocks = <&cpg CPG_MOD 917>;
+			bank-width = <2>;
+			status = "disabled";
+		};
 	};
 
 	timer {