dm: core: Update uclass_find_next_free_req_seq() for new scheme

This function current deals with req_seq which is deprecated. Update it to
use the new sequence numbers, putting them above existing aliases. Rename
the function to make this clear.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/core/device.c b/drivers/core/device.c
index b878a4d..4abb5be 100644
--- a/drivers/core/device.c
+++ b/drivers/core/device.c
@@ -93,18 +93,14 @@
 			}
 			if (CONFIG_IS_ENABLED(OF_PRIOR_STAGE)) {
 				if (dev->req_seq == -1) {
-					auto_seq = true;
 					dev->req_seq =
-						uclass_find_next_free_req_seq(
-							uc);
+						uclass_find_next_free_seq(uc);
 				}
 			}
-		} else {
-			dev->req_seq = uclass_find_next_free_req_seq(uc);
 		}
 	}
 	if (auto_seq && !(uc->uc_drv->flags & DM_UC_FLAG_NO_AUTO_SEQ))
-		dev->sqq = uclass_find_next_free_req_seq(uc);
+		dev->sqq = uclass_find_next_free_seq(uc);
 
 	if (drv->plat_auto) {
 		bool alloc = !plat;