Use the more common pr_warn.

Other miscellanea:

o Realign arguments
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lkml.kernel.org/r/b438c7c54306f095a150e50df41fbba4d515c2f8.1410632835.git.joe@perches.comSigned-off-by: Jason Cooper <jason@lakedaemon.net>