arm64: dts: broadcom: bcm4908: describe PCIe reset controller

This reset controller is a single register in the Broadcom's MISC block.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

arch/arm64/boot/dts/broadcom/bcm4908/bcm4908.dtsi

@@ -177,6 +177,21 @@ nandcs: nandcs@0 {
 			};
 		};
 
+		misc@2600 {
+			compatible = "brcm,misc", "simple-mfd";
+			reg = <0x2600 0xe4>;
+
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges = <0x00 0x2600 0xe4>;
+
+			reset-controller@2644 {
+				compatible = "brcm,bcm4908-misc-pcie-reset";
+				reg = <0x44 0x04>;
+				#reset-cells = <1>;
+			};
+		};
+
 		reboot {
 			compatible = "syscon-reboot";
 			regmap = <&timer>;