staging: bcm2835-audio: Remove unnecessary header file includes

Yet a few header files are included unnecessarily.  Drop them.

Also remove trivial comments.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c

 // SPDX-License-Identifier: GPL-2.0
 /* Copyright 2011 Broadcom Corporation.  All rights reserved. */
 
-#include <linux/device.h>
-#include <sound/core.h>
-#include <sound/initval.h>
-#include <sound/pcm.h>
-#include <linux/io.h>
-#include <linux/interrupt.h>
-#include <linux/fs.h>
-#include <linux/file.h>
-#include <linux/mm.h>
-#include <linux/syscalls.h>
-#include <linux/uaccess.h>
 #include <linux/slab.h>
-#include <linux/delay.h>
-#include <linux/atomic.h>
 #include <linux/module.h>
 #include <linux/completion.h>
-
 #include "bcm2835.h"
-
-/* ---- Include Files -------------------------------------------------------- */
-
 #include "vc_vchi_audioserv_defs.h"
 
-/* ---- Private Constants and Types ------------------------------------------ */
-
 struct bcm2835_audio_instance {
 	struct device *dev;
 	VCHI_SERVICE_HANDLE_T vchi_handle;

drivers/staging/vc04_services/bcm2835-audio/bcm2835.h

@@ -5,16 +5,10 @@
 #define __SOUND_ARM_BCM2835_H
 
 #include <linux/device.h>
-#include <linux/list.h>
-#include <linux/interrupt.h>
 #include <linux/wait.h>
 #include <sound/core.h>
-#include <sound/initval.h>
 #include <sound/pcm.h>
-#include <sound/pcm_params.h>
 #include <sound/pcm-indirect.h>
-#include <linux/workqueue.h>
-
 #include "interface/vchi/vchi.h"
 
 #define MAX_SUBSTREAMS   (8)