dm: exynos: sound: Convert to use driver model

Update snow's device tree and config to use driver model for sound. Also
update the others as best we can.

Spring does not appear to have audio support in the kernel. The smdk5250
and smdk5420 boards use a wolfson codec which I cannot test with. So the
only boards that is tested and known to work are snow, pit and pi.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/sound/samsung_sound.c b/drivers/sound/samsung_sound.c
index 23b467c..1d711c8 100644
--- a/drivers/sound/samsung_sound.c
+++ b/drivers/sound/samsung_sound.c
@@ -89,6 +89,9 @@
 
 static const struct udevice_id samsung_sound_ids[] = {
 	{ .compatible = "google,snow-audio-max98095" },
+	{ .compatible = "google,spring-audio-max98095" },
+	{ .compatible = "samsung,smdk5420-audio-wm8994" },
+	{ .compatible = "google,peach-audio-max98090" },
 	{ }
 };