arm: dts: mt7622: add PCIe nodes for BananaPi-R64

this patch adds PCIe-Nodes for BananaPi R64

original nodes from Chuanjia Liu for mt7622-rfb

Signed-off-by: Frank Wunderlich <frank-w@public-files.de>

arch/arm/dts/mt7622-bpi-r64.dts

@@ -46,8 +46,39 @@
 	};
 };
 
+&pcie {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie0_pins>, <&pcie1_pins>;
+	status = "okay";
+
+	pcie@0,0 {
+		status = "okay";
+	};
+
+	pcie@1,0 {
+		status = "okay";
+	};
+};
 
 &pinctrl {
+	pcie0_pins: pcie0-pins {
+		mux {
+			function = "pcie";
+			groups = "pcie0_pad_perst",
+				 "pcie0_1_waken",
+				 "pcie0_1_clkreq";
+		};
+	};
+
+	pcie1_pins: pcie1-pins {
+		mux {
+			function = "pcie";
+			groups = "pcie1_pad_perst",
+				 "pcie1_0_waken",
+				 "pcie1_0_clkreq";
+		};
+	};
+
 	snfi_pins: snfi-pins {
 		mux {
 			function = "flash";