ARM: dts: renesas: Minimize R8A779G0 V4H RPC SPI DT node

The RPC SPI DT node is now part of mainline Linux DT, remove the
duplicate content from U-Boot DT extras. The SPI flash DT node name
has been changed from "spi-flash@0" to "flash@0", reflect this change
in this patch. Retain "bank-width" and "num-cs" DT properties which
are used by U-Boot. Retain "spi-rx-bus-width" and "spi-tx-bus-width"
DT properties to indicate the bus should always be operated in 1-1-1
mode as the U-Boot RPC SPI driver does not support higher bus width
modes yet.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
diff --git a/arch/arm/dts/r8a779g0-u-boot.dtsi b/arch/arm/dts/r8a779g0-u-boot.dtsi
index cc8beca..f60eba5 100644
--- a/arch/arm/dts/r8a779g0-u-boot.dtsi
+++ b/arch/arm/dts/r8a779g0-u-boot.dtsi
@@ -8,7 +8,6 @@
 #include "r8a779x-u-boot.dtsi"
 
 &rpc {
-	reg = <0 0xee200000 0 0x200>, <0 0x08000000 0 0x04000000>;
 	bank-width = <2>;
 	num-cs = <1>;
 };
diff --git a/arch/arm/dts/r8a779g0-white-hawk-u-boot.dtsi b/arch/arm/dts/r8a779g0-white-hawk-u-boot.dtsi
index a102639..c3704d7 100644
--- a/arch/arm/dts/r8a779g0-white-hawk-u-boot.dtsi
+++ b/arch/arm/dts/r8a779g0-white-hawk-u-boot.dtsi
@@ -13,29 +13,9 @@
 	};
 };
 
-&pfc {
-	qspi0_pins: qspi0 {
-		groups = "qspi0_ctrl", "qspi0_data4";
-		function = "qspi0";
-	};
-};
-
 &rpc {
-	pinctrl-0 = <&qspi0_pins>;
-	pinctrl-names = "default";
-
-	#address-cells = <1>;
-	#size-cells = <0>;
-	spi-max-frequency = <40000000>;
-	status = "disabled";
-
-	spi-flash@0 {
-		#address-cells = <1>;
-		#size-cells = <1>;
-		compatible = "s25fs512s", "jedec,spi-nor";
-		reg = <0>;
+	flash@0 {
 		spi-tx-bus-width = <1>;
 		spi-rx-bus-width = <1>;
-		spi-max-frequency = <40000000>;
 	};
 };