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/clk/clk_sandbox.c b/drivers/clk/clk_sandbox.c
index 0ff1b49..2c6c0e2 100644
--- a/drivers/clk/clk_sandbox.c
+++ b/drivers/clk/clk_sandbox.c
@@ -130,7 +130,7 @@
 	.of_match	= sandbox_clk_ids,
 	.ops		= &sandbox_clk_ops,
 	.probe		= sandbox_clk_probe,
-	.priv_auto_alloc_size = sizeof(struct sandbox_clk_priv),
+	.priv_auto	= sizeof(struct sandbox_clk_priv),
 };
 
 ulong sandbox_clk_query_rate(struct udevice *dev, int id)