ide: print message on error in ide_find_port_slot()

* Add DRV_NAME define to ide-h8300.c.

* Fix ide-h8300.c, swarm.c and sgiioc4.c to set .name field in
  struct ide_port_info to DRV_NAME, then convert these host drivers
  to use ide_find_port_slot() instead of ide_find_port().

* Print message on error in ide_find_port_slot().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/setup-pci.c b/drivers/ide/setup-pci.c
index 166211f..4321d20 100644
--- a/drivers/ide/setup-pci.c
+++ b/drivers/ide/setup-pci.c
@@ -332,11 +332,8 @@
 	}
 
 	hwif = ide_find_port_slot(d);
-	if (hwif == NULL) {
-		printk(KERN_ERR "%s: too many IDE interfaces, no room in "
-				"table\n", d->name);
+	if (hwif == NULL)
 		return NULL;
-	}
 
 	memset(&hw, 0, sizeof(hw));
 	hw.irq = irq;