ARM: dts: am57xx-evm: Add 'gpios' property with gpio2_8

gpio2_8 is connected to the PCIe_RESETn line and it has to be driven low to
reset the PCIe cards.  Add gpios property to PCIe DT node.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi
index 8f1e25b..37202b4 100644
--- a/arch/arm/boot/dts/dra7.dtsi
+++ b/arch/arm/boot/dts/dra7.dtsi
@@ -211,7 +211,7 @@
 			#address-cells = <1>;
 			ranges = <0x51000000 0x51000000 0x3000
 				  0x0	     0x20000000 0x10000000>;
-			pcie@51000000 {
+			pcie1: pcie@51000000 {
 				compatible = "ti,dra7-pcie";
 				reg = <0x51000000 0x2000>, <0x51002000 0x14c>, <0x1000 0x2000>;
 				reg-names = "rc_dbics", "ti_conf", "config";