ARM: dts: DRA7: Add "linux,pci-domain" property for pci dt nodes

Since DRA7 has multiple PCIe Rootcomplex, add "linux,pci-domain"
property to assign a PCI domain number to each of the host
bridges.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/dra7.dtsi

@@ -301,6 +301,7 @@
 					  0x82000000 0 0x20013000 0x13000 0 0xffed000>;
 				#interrupt-cells = <1>;
 				num-lanes = <1>;
+				linux,pci-domain = <0>;
 				ti,hwmods = "pcie1";
 				phys = <&pcie1_phy>;
 				phy-names = "pcie-phy0";
@@ -336,6 +337,7 @@
 					  0x82000000 0 0x30013000 0x13000 0 0xffed000>;
 				#interrupt-cells = <1>;
 				num-lanes = <1>;
+				linux,pci-domain = <1>;
 				ti,hwmods = "pcie2";
 				phys = <&pcie2_phy>;
 				phy-names = "pcie-phy0";