arm: dts: meson-khadas-vim3: enable PCIe in U-boot

Enable PCIe by default in u-boot, this should eventually be made dynamic
in the runtime board config depending on the MCU configuration.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>

arch/arm/dts/meson-khadas-vim3-u-boot.dtsi

@@ -10,6 +10,10 @@
 	};
 };
 
+&pcie {
+	status = "okay";
+};
+
 &sd_emmc_c {
 	status = "okay";
 	pinctrl-0 = <&emmc_ctrl_pins>, <&emmc_data_4b_pins>, <&emmc_ds_pins>;