tty: staging/greybus: pass tty_driver flags to tty_alloc_driver()

tty_alloc_driver() is supposed to receive tty driver flags.

Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
Acked-by: Johan Hovold <johan@kernel.org>
Cc: David Lin <dtwlin@gmail.com>
Cc: Alex Elder <elder@kernel.org>
Cc: greybus-dev@lists.linaro.org
Cc: linux-staging@lists.linux.dev
Reviewed-by: Alex Elder <elder@riscstar.com>
Link: https://lore.kernel.org/r/20250317070046.24386-23-jirislaby@kernel.org


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