staging: r8188eu: inline rtw_init_netdev_name()

The rtw_init_netdev_name() is a small function
that is used once and does not encapsulate any logic.

Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Link: https://lore.kernel.org/r/20201018201132.40480-1-insafonov@gmail.com


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