[libata] export ata_dev_set_feature()

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

drivers/ata/libata-core.c

@@ -4491,6 +4491,7 @@ unsigned int ata_dev_set_feature(struct ata_device *dev, u8 enable, u8 feature)
 	DPRINTK("EXIT, err_mask=%x\n", err_mask);
 	return err_mask;
 }
+EXPORT_SYMBOL_GPL(ata_dev_set_feature);
 
 /**
  *	ata_dev_init_params - Issue INIT DEV PARAMS command