netdev: use napi_schedule bool instead of napi_schedule_prep/__napi_schedule

Replace if condition of napi_schedule_prep/__napi_schedule and use bool
from napi_schedule directly where possible.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Link: https://lore.kernel.org/r/20231009133754.9834-5-ansuelsmth@gmail.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>