colibri_t20: fix ulpi reset polarity

Fix ULPI reset polarity which caused a hard hang on Colibri T20 upon
attempting to start the USB subsystem:

This fixes my late commit d5a24d8b53
(colibri_t20: fix usb operation and controller order) inadvertently
having overwritten Stephen's previous commit
2f6a7e8ce5 (ARM: tegra: fix USB ULPI PHY
reset signal inversion confusion).

While at it also fix comment about on-module USB port.

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>

arch/arm/dts/tegra20-colibri.dts

@@ -16,7 +16,7 @@
 		i2c2 = "/i2c@7000c400";
 		mmc0 = "/sdhci@c8000600";
 		usb0 = "/usb@c5000000";
-		usb1 = "/usb@c5004000"; /* on-module only, for ASIX */
+		usb1 = "/usb@c5004000"; /* On-module only, for ASIX */
 		usb2 = "/usb@c5008000";
 	};
 
@@ -92,8 +92,10 @@
 	/* EHCI instance 1: ULPI -> USB3340 -> AX88772B */
 	usb@c5004000 {
 		status = "okay";
+		/* ULPI_RESET */
+		nvidia,phy-reset-gpio =
+				<&gpio TEGRA_GPIO(V, 1) GPIO_ACTIVE_LOW>;
 		/* VBUS_LAN */
-		nvidia,phy-reset-gpio = <&gpio TEGRA_GPIO(V, 1) GPIO_ACTIVE_HIGH>;
 		nvidia,vbus-gpio = <&gpio TEGRA_GPIO(BB, 1) GPIO_ACTIVE_HIGH>;
 	};