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/sound/sandbox.c b/drivers/sound/sandbox.c
index 0686add..4a2c87a 100644
--- a/drivers/sound/sandbox.c
+++ b/drivers/sound/sandbox.c
@@ -223,7 +223,7 @@
 	.id		= UCLASS_AUDIO_CODEC,
 	.of_match	= sandbox_codec_ids,
 	.ops		= &sandbox_codec_ops,
-	.priv_auto_alloc_size	= sizeof(struct sandbox_codec_priv),
+	.priv_auto	= sizeof(struct sandbox_codec_priv),
 };
 
 static const struct i2s_ops sandbox_i2s_ops = {
@@ -241,7 +241,7 @@
 	.of_match	= sandbox_i2s_ids,
 	.ops		= &sandbox_i2s_ops,
 	.probe		= sandbox_i2s_probe,
-	.priv_auto_alloc_size	= sizeof(struct sandbox_i2s_priv),
+	.priv_auto	= sizeof(struct sandbox_i2s_priv),
 };
 
 static const struct sound_ops sandbox_sound_ops = {
@@ -262,6 +262,6 @@
 	.id		= UCLASS_SOUND,
 	.of_match	= sandbox_sound_ids,
 	.ops		= &sandbox_sound_ops,
-	.priv_auto_alloc_size	= sizeof(struct sandbox_sound_priv),
+	.priv_auto	= sizeof(struct sandbox_sound_priv),
 	.probe		= sandbox_sound_probe,
 };