[libata] pata_cmd64x: fix driver description in comments

Trivial comment fix, taken out of a larger Alan Cox patch.
Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/ata/pata_cmd64x.c

 /*
- * pata_cmd64x.c 	- ATI PATA for new ATA layer
+ * pata_cmd64x.c 	- CMD64x PATA for new ATA layer
  *			  (C) 2005 Red Hat Inc
  *			  Alan Cox <alan@redhat.com>
  *