arm64: dts: rockchip: working pci3x4 for Mixtile Blade3

- pinctrl for `1 RK_PB2` pull_up
- regulator `vcc3v3_pcie30` always-on and boot-on
  - there is probably a much better fix than this, but I couldn't find it

Signed-off-by: Ricardo Pardini <ricardo@pardini.net>

arch/arm64/boot/dts/rockchip/rk3588-mixtile-blade3.dts

@@ -105,6 +105,8 @@
 		regulator-min-microvolt = <3300000>;
 		regulator-max-microvolt = <3300000>;
 		enable-active-high;
+		regulator-boot-on;
+		regulator-always-on;
 		gpios = <&gpio1 RK_PB2 GPIO_ACTIVE_HIGH>;
 		startup-delay-us = <5000>;
 		vin-supply = <&vcc12v_dcin>;
@@ -317,7 +319,7 @@
 		};
 
 		pcie3_vcc3v3_en: pcie3-vcc3v3-en {
-			rockchip,pins = <1 RK_PB2 RK_FUNC_GPIO &pcfg_pull_none>;
+			rockchip,pins = <1 RK_PB2 RK_FUNC_GPIO &pcfg_pull_up>;
 		};
 	};
 };