ARM: dts: alpine: add internal pci

This patch adds device-tree entry for the internal pci bus on Alpine.
Alpine's on-chip devices appear as pci devices on this bus.
Signed-off-by: NTsahee Zidenberg <tsahee@annapurnalabs.com>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

arch/arm/boot/dts/alpine.dtsi

@@ -137,5 +137,24 @@
 			reg-shift = <2>;
 			reg-io-width = <4>;
 		};
+
+		/* Internal PCIe Controller */
+		pcie-internal@0xfbc00000 {
+			compatible = "pci-host-ecam-generic";
+			device_type = "pci";
+			#size-cells = <2>;
+			#address-cells = <3>;
+			#interrupt-cells = <1>;
+			reg = <0x0 0xfbc00000 0x0 0x100000>;
+			interrupt-map-mask = <0xf800 0 0 7>;
+			/* Add legacy interrupts for SATA devices only */
+			interrupt-map =	<0x4000 0 0 1 &gic 0 43 4>,
+					<0x4800 0 0 1 &gic 0 44 4>;
+
+			/* 32 bit non prefetchable memory space */
+			ranges = <0x02000000 0x0 0xfe000000 0x0 0xfe000000 0x0 0x1000000>;
+
+			bus-range = <0x00 0x00>;
+		};
 	};
 };