arm64: dts: mediatek: cherry: Enable PCI-Express ports for WiFi

On the Cherry platform, a MT7621 WiFi+Bluetooth combo is connected
over PCI-Express (for WiFi) and USB (for BT): enable the PCIe ports
to enable enumerating this chip.
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Tested-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: Alexandre Mergnat <amergnat@baylibre.com>
Link: https://lore.kernel.org/r/20230424112523.1436926-5-angelogioacchino.delregno@collabora.comSigned-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi

@@ -464,6 +464,13 @@ flash@0 {
 	};
 };
 
+&pcie1 {
+	status = "okay";
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie1_pins_default>;
+};
+
 &pio {
 	mediatek,rsel-resistance-in-si-unit;
 	pinctrl-names = "default";
@@ -852,6 +859,24 @@ pins-cs {
 		};
 	};
 
+	pcie0_pins_default: pcie0-default-pins {
+		pins-bus {
+			pinmux = <PINMUX_GPIO19__FUNC_WAKEN>,
+				 <PINMUX_GPIO20__FUNC_PERSTN>,
+				 <PINMUX_GPIO21__FUNC_CLKREQN>;
+				 bias-pull-up;
+		};
+	};
+
+	pcie1_pins_default: pcie1-default-pins {
+		pins-bus {
+			pinmux = <PINMUX_GPIO22__FUNC_PERSTN_1>,
+				 <PINMUX_GPIO23__FUNC_CLKREQN_1>,
+				 <PINMUX_GPIO24__FUNC_WAKEN_1>;
+				 bias-pull-up;
+		};
+	};
+
 	pio_default: pio-default-pins {
 		pins-wifi-enable {
 			pinmux = <PINMUX_GPIO58__FUNC_GPIO58>;