ARM: tegra: harmony: Initialize PCIe from DT

With the device tree support in place, probe the PCIe controller from
the device tree and remove the corresponding workaround in the board
file.

Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>

arch/arm/boot/dts/tegra20-harmony.dts

@@ -335,7 +335,7 @@
 					regulator-always-on;
 				};
 
-				ldo0 {
+				pci_clk_reg: ldo0 {
 					regulator-name = "vdd_ldo0,vddio_pex_clk";
 					regulator-min-microvolt = <3300000>;
 					regulator-max-microvolt = <3300000>;
@@ -425,6 +425,20 @@
 		nvidia,sys-clock-req-active-high;
 	};
 
+	pcie-controller {
+		pex-clk-supply = <&pci_clk_reg>;
+		vdd-supply = <&pci_vdd_reg>;
+		status = "okay";
+
+		pci@1,0 {
+			status = "okay";
+		};
+
+		pci@2,0 {
+			status = "okay";
+		};
+	};
+
 	usb@c5000000 {
 		status = "okay";
 	};
@@ -643,7 +657,7 @@
 			enable-active-high;
 		};
 
-		regulator@3 {
+		pci_vdd_reg: regulator@3 {
 			compatible = "regulator-fixed";
 			reg = <3>;
 			regulator-name = "vdd_1v05";
@@ -651,8 +665,6 @@
 			regulator-max-microvolt = <1050000>;
 			gpio = <&pmic 2 GPIO_ACTIVE_HIGH>;
 			enable-active-high;
-			/* Hack until board-harmony-pcie.c is removed */
-			status = "disabled";
 		};
 
 		regulator@4 {