net: thunderbolt: Update module description with mention of USB4

It is Thunderbolt/USB4 now so reflect that in the module description too
to avoid any confusion. No functional changes.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 file changed