dm: scsi: if_typename should be scsi

Fixes:

=> ext2ls scsi 0:1
** Bad device scsi 0:1 **

for boards which use the scsi legacy driver (such as ls1043ardb).
Signed-off-by: NEd Swarthout <Ed.Swarthout@nxp.com>
Tested-by: NGeorge McCollister <george.mccollister@gmail.com>
Acked-by: NSimon Glass <sjg@chromium.org>

common/scsi.c

@@ -584,7 +584,7 @@ U_BOOT_DRIVER(scsi_blk) = {
 };
 #else
 U_BOOT_LEGACY_BLK(scsi) = {
-	.if_typename	= "sata",
+	.if_typename	= "scsi",
 	.if_type	= IF_TYPE_SCSI,
 	.max_devs	= CONFIG_SYS_SCSI_MAX_DEVICE,
 	.desc		= scsi_dev_desc,