net: usb: rtl8150: use new tasklet API

[ Upstream commit 1999ad32 ]

This converts the driver to use the new tasklet API introduced in
commit 12cc923f ("tasklet: Introduce new initialization API")

Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: 90b7f296 ("net: usb: rtl8150: enable basic endpoint checking")
Signed-off-by: Sasha Levin <sashal@kernel.org>