staging: vt6656: Remove STATUS enums from TX path

Returning standard error code or status variable.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Link: https://lore.kernel.org/r/21bf299b-63e0-9f65-c7db-6e0b72e0f1d8@gmail.com


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