dm: treewide: Rename auto_alloc_size members to be shorter

This construct is quite long-winded. In earlier days it made some sense
since auto-allocation was a strange concept. But with driver model now
used pretty universally, we can shorten this to 'auto'. This reduces
verbosity and makes it easier to read.

Coincidentally it also ensures that every declaration is on one line,
thus making dtoc's job easier.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/video/ihs_video_out.c b/drivers/video/ihs_video_out.c
index f02fd13..73b8f4b 100644
--- a/drivers/video/ihs_video_out.c
+++ b/drivers/video/ihs_video_out.c
@@ -338,5 +338,5 @@
 	.ops		= &ihs_video_out_ops,
 	.of_match       = ihs_video_out_ids,
 	.probe          = ihs_video_out_probe,
-	.priv_auto_alloc_size = sizeof(struct ihs_video_out_priv),
+	.priv_auto	= sizeof(struct ihs_video_out_priv),
 };