usb: host: ehci-tegra: Remove unused fields from tegra_ehci_hcd

There are few stale fields in tegra_ehci_hcd structure, let's remove them.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/20200106013416.9604-21-digetx@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/ehci-tegra.c

@@ -42,12 +42,10 @@ struct tegra_ehci_soc_config {
 };
 
 struct tegra_ehci_hcd {
-	struct tegra_usb_phy *phy;
 	struct clk *clk;
 	struct reset_control *rst;
 	int port_resuming;
 	bool needs_double_reset;
-	enum tegra_usb_phy_port_speed port_speed;
 };
 
 static int tegra_reset_usb_controller(struct platform_device *pdev)