[media] em28xx-audio: fix missing newlines

Inspection shows that newlines are missing from several kernel messages
in em28xx-audio.  Fix these.

Fixes: 6d746f91

 ("[media] em28xx-audio: implement em28xx_ops: suspend/resume hooks")

Cc: <stable@vger.kernel.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Reviewed-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>