dm: sound: Complete migration to driver model

All users of sound are converted to use driver model. Drop the old code
and the CONFIG_DM_SOUND option.

Signed-off-by: Simon Glass <sjg@chromium.org>

arch/sandbox/cpu/sdl.c

@@ -7,7 +7,6 @@
 #include <unistd.h>
 #include <linux/input.h>
 #include <SDL/SDL.h>
-#include <sound.h>
 #include <asm/state.h>
 
 enum {

arch/sandbox/include/asm/sdl.h

@@ -54,12 +54,12 @@ int sandbox_sdl_scan_keys(int key[], int max_keys);
 int sandbox_sdl_key_pressed(int keycode);
 
 /**
- * sandbox_sdl_sound_start() - start playing a sound
+ * sandbox_sdl_sound_play() - Play a sound
  *
- * @frequency:	Frequency of sounds in Hertz
- * @return 0 if OK, -ENODEV if no sound is available
+ * @data:	Data to play (typically 16-bit)
+ * @count:	Number of bytes in data
  */
-int sandbox_sdl_sound_start(uint frequency);
+int sandbox_sdl_sound_play(const void *data, uint count);
 
 /**
  * sandbox_sdl_sound_stop() - stop playing a sound
@@ -68,14 +68,6 @@ int sandbox_sdl_sound_start(uint frequency);
  */
 int sandbox_sdl_sound_stop(void);
 
-/**
- * sandbox_sdl_sound_play() - Play a sound
- *
- * @data:	Data to play (typically 16-bit)
- * @count:	Number of bytes in data
- */
-int sandbox_sdl_sound_play(const void *data, uint count);
-
 /**
  * sandbox_sdl_sound_init() - set up the sound system
  *
@@ -110,6 +102,11 @@ static inline int sandbox_sdl_sound_start(uint frequency)
 	return -ENODEV;
 }
 
+int sandbox_sdl_sound_play(const void *data, uint count)
+{
+	return -ENODEV;
+}
+
 static inline int sandbox_sdl_sound_stop(void)
 {
 	return -ENODEV;

arch/sandbox/include/asm/sound.h

@@ -1,13 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0+ */
-/*
- * Copyright (c) 2013 Google, Inc
- */
-
-#ifndef __SANDBOX_SOUND_H
-#define __SANDBOX_SOUND_H
-
-int sound_play(unsigned int msec, unsigned int frequency);
-
-int sound_init(const void *blob);
-
-#endif