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/serial/serial_efi.c b/drivers/serial/serial_efi.c
index b152e10..33ddbd6 100644
--- a/drivers/serial/serial_efi.c
+++ b/drivers/serial/serial_efi.c
@@ -150,7 +150,7 @@
 	.name	= "serial_efi",
 	.id	= UCLASS_SERIAL,
 	.of_match = serial_efi_ids,
-	.priv_auto_alloc_size = sizeof(struct serial_efi_priv),
+	.priv_auto	= sizeof(struct serial_efi_priv),
 	.probe = serial_efi_probe,
 	.ops	= &serial_efi_ops,
 };