Staging: Panel: panel: Fixed checkpatch line length warnings

Fixed 4 cases of line length issues with checkpatch. Checkpatch is now clean
for panel.c.

Signed-off-by: 'Jake Champlin <jake.champlin.27@gmail.com&gt;'>
Acked-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>