ARM: dts: keystone: add interrupt property to PCI controller bindings

Now that Keystone PCIe controller supports error interrupt handling
add interrupt property to PCI controller DT bindings to enable
error interrupt handling.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org>

arch/arm/boot/dts/keystone-k2e.dtsi

@@ -104,6 +104,8 @@
 			num-lanes = <2>;
 			bus-range = <0x00 0xff>;
 
+			/* error interrupt */
+			interrupts = <GIC_SPI 385 IRQ_TYPE_EDGE_RISING>;
 			#interrupt-cells = <1>;
 			interrupt-map-mask = <0 0 0 7>;
 			interrupt-map = <0 0 0 1 &pcie_intc1 0>, /* INT A */

arch/arm/boot/dts/keystone.dtsi

@@ -302,6 +302,8 @@
 			num-lanes = <2>;
 			bus-range = <0x00 0xff>;
 
+			/* error interrupt */
+			interrupts = <GIC_SPI 38 IRQ_TYPE_EDGE_RISING>;
 			#interrupt-cells = <1>;
 			interrupt-map-mask = <0 0 0 7>;
 			interrupt-map = <0 0 0 1 &pcie_intc0 0>, /* INT A */