[libata] export sata_print_link_status()

To be used in sata_mv's exception handling code, and overall is a
generally useful function.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 0cfbcb6..a417498 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -701,6 +701,7 @@
 	return ap->ops == &ata_dummy_port_ops;
 }
 
+extern void sata_print_link_status(struct ata_port *ap);
 extern void ata_port_probe(struct ata_port *);
 extern void __sata_phy_reset(struct ata_port *ap);
 extern void sata_phy_reset(struct ata_port *ap);