dm: core: Rename DM_NAME_ALLOCED to DM_FLAG_NAME_ALLOCED

This is a flag. Adjust the name to be consistent with the other flags.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/core/device-remove.c b/drivers/core/device-remove.c
index 0e56b23..a7f77b4 100644
--- a/drivers/core/device-remove.c
+++ b/drivers/core/device-remove.c
@@ -112,7 +112,7 @@
 
 	devres_release_all(dev);
 
-	if (dev->flags & DM_NAME_ALLOCED)
+	if (dev->flags & DM_FLAG_NAME_ALLOCED)
 		free((char *)dev->name);
 	free(dev);