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: JC Kuo <jckuo@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20191206140653.2085561-2-thierry.reding@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>