usb: host: xhci-tegra: Fix "tega" -> "tegra" typo

The tegra_xusb_mbox_regs structure was misspelled tega_xusb_mbox_regs.
Fortunately this was done consistently so it didn't cause any issues.
Reviewed-by: NJC Kuo <jckuo@nvidia.com>
Signed-off-by: NThierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20191206140653.2085561-2-thierry.reding@gmail.comSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/xhci-tegra.c

@@ -145,7 +145,7 @@ struct tegra_xusb_phy_type {
 	unsigned int num;
 };
 
-struct tega_xusb_mbox_regs {
+struct tegra_xusb_mbox_regs {
 	u16 cmd;
 	u16 data_in;
 	u16 data_out;
@@ -166,7 +166,7 @@ struct tegra_xusb_soc {
 		} usb2, ulpi, hsic, usb3;
 	} ports;
 
-	struct tega_xusb_mbox_regs mbox;
+	struct tegra_xusb_mbox_regs mbox;
 
 	bool scale_ss_clock;
 	bool has_ipfs;