usb: host: tegra: Locate a PHY via standard API

Use devm_get_phy_by_phandle to get a PHY device instead of the custom
Tegra functions.
Signed-off-by: NTuomas Tynkkynen <ttynkkynen@nvidia.com>
Reviewed-by: NStephen Warren <swarren@nvidia.com>
Tested-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

drivers/usb/host/ehci-tegra.c

@@ -328,7 +328,6 @@ static int tegra_ehci_probe(struct platform_device *pdev)
 	struct tegra_ehci_hcd *tegra;
 	int err = 0;
 	int irq;
-	struct device_node *np_phy;
 	struct usb_phy *u_phy;
 
 	/* Right now device-tree probed devices don't get dma_mask set.
@@ -367,13 +366,7 @@ static int tegra_ehci_probe(struct platform_device *pdev)
 	udelay(1);
 	tegra_periph_reset_deassert(tegra->clk);
 
-	np_phy = of_parse_phandle(pdev->dev.of_node, "nvidia,phy", 0);
-	if (!np_phy) {
-		err = -ENODEV;
-		goto cleanup_clk_en;
-	}
-
-	u_phy = tegra_usb_get_phy(np_phy);
+	u_phy = devm_usb_get_phy_by_phandle(&pdev->dev, "nvidia,phy", 0);
 	if (IS_ERR(u_phy)) {
 		err = PTR_ERR(u_phy);
 		goto cleanup_clk_en;