netpoll: remove dev argument from netpoll_send_skb_on_dev()

[ Upstream commit 307f660d ]

netpoll_send_skb_on_dev() can get the device pointer directly from np->dev

Rename it to __netpoll_send_skb()

Following patch will move netpoll_send_skb() out-of-line.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: 505ead7a ("netpoll: hold rcu read lock in __netpoll_send_skb()")
Signed-off-by: Sasha Levin <sashal@kernel.org>