sh: r2dplus: Switch to DM PCI driver

Add DT entry for the DM PCI driver, update board configs
and drop ad-hoc board init code for the PCI bus. Instead,
let the DM PCI driver initialize and operate the hardware.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
diff --git a/arch/sh/dts/sh7751-r2dplus.dts b/arch/sh/dts/sh7751-r2dplus.dts
index 2d291bf..ecaf077 100644
--- a/arch/sh/dts/sh7751-r2dplus.dts
+++ b/arch/sh/dts/sh7751-r2dplus.dts
@@ -9,4 +9,18 @@
 / {
 	model = "R2D";
 	compatible = "renesas,r2d", "renesas,sh7751";
+
+	pci@fe200000 {
+		compatible = "renesas,pci-sh7751";
+		device_type = "pci";
+		reg = <0 0xfe200000 0 0x1000>;
+		status = "okay";
+
+		bus-range = <0 0>;
+		#address-cells = <3>;
+		#size-cells = <2>;
+		#interrupt-cells = <1>;
+		ranges = <0x01000000 0 0xfe240000 0 0xfe240000 0 0x00040000
+			  0x02000000 0 0xfd000000 0 0xfd000000 0 0x01000000>;
+	};
 };