xhci(4): Ensure the so-called data toggle gets properly reset.
Use the drop and enable endpoint context commands to force a reset of the data toggle for USB 2.0 and USB 3.0 after: - clear endpoint halt command (when the driver wishes). - set config command (when the kernel or user-space wants). - set alternate setting command (only affected endpoints). Some XHCI HW implementations may not allow the endpoint reset command when the endpoint context is not in the halted state. Reported by: Juniper and Gary Jennejohn MFC after: 1 week Sponsored by: NVIDIA Networking (cherry picked from commit cda31e73)