pata_pcmcia: add CNF-CDROM-ID

Fixes this report:
http://article.gmane.org/gmane.linux.kernel.pcmcia.devel/2228/



Reported-by: John McGrath <john@john-mcgrath.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>