ALSA: ctxfi: fix comment syntax in file headers

The opening comment mark '/**' is used for highlighting the beginning of
kernel-doc comments.
There are files in sound/pci/ctxfi which follow this syntax in their file
headers, i.e. start with '/**' like comments, which causes unexpected
warnings from kernel-doc.

E.g., running scripts/kernel-doc -none on sound/pci/ctxfi/ctresource.c
causes this warning:
"warning: wrong kernel-doc identifier on line:
 * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved."

Similarly for other files too.

Provide a simple fix by replacing the kernel-doc like comment syntax with
general format, i.e. "/*", to prevent kernel-doc from parsing it.
Signed-off-by: Aditya Srivastava <yashsri421@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20210317203932.23993-1-yashsri421@gmail.comSigned-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/ctxfi/ct20k1reg.h

 /* SPDX-License-Identifier: GPL-2.0-only */
-/**
+/*
  * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
  */
 

sound/pci/ctxfi/ct20k2reg.h

 /* SPDX-License-Identifier: GPL-2.0-only */
-/**
+/*
  * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
  */
 

sound/pci/ctxfi/ctamixer.c

 // SPDX-License-Identifier: GPL-2.0-only
-/**
+/*
  * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
  *
  * @File	ctamixer.c

sound/pci/ctxfi/ctamixer.h

 /* SPDX-License-Identifier: GPL-2.0-only */
-/**
+/*
  * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
  *
  * @File	ctamixer.h

sound/pci/ctxfi/ctatc.c

 // SPDX-License-Identifier: GPL-2.0-only
-/**
+/*
  * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
  *
  * @File    ctatc.c

sound/pci/ctxfi/ctatc.h

 /* SPDX-License-Identifier: GPL-2.0-only */
-/**
+/*
  * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
  *
  * @File	ctatc.h

sound/pci/ctxfi/ctdaio.c

 // SPDX-License-Identifier: GPL-2.0-only
-/**
+/*
  * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
  *
  * @File	ctdaio.c

sound/pci/ctxfi/ctdaio.h

 /* SPDX-License-Identifier: GPL-2.0-only */
-/**
+/*
  * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
  *
  * @File	ctdaio.h

sound/pci/ctxfi/cthardware.h

 /* SPDX-License-Identifier: GPL-2.0-only */
-/**
+/*
  * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
  *
  * @File	cthardware.h

sound/pci/ctxfi/cthw20k1.h

 /* SPDX-License-Identifier: GPL-2.0-only */
-/**
+/*
  * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
  *
  * @File	cthw20k1.h

sound/pci/ctxfi/cthw20k2.h

 /* SPDX-License-Identifier: GPL-2.0-only */
-/**
+/*
  * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
  *
  * @File	cthw20k2.h

sound/pci/ctxfi/ctimap.h

 /* SPDX-License-Identifier: GPL-2.0-only */
-/**
+/*
  * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
  *
  * @File	ctimap.h

sound/pci/ctxfi/ctmixer.h

 /* SPDX-License-Identifier: GPL-2.0-only */
-/**
+/*
  * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
  *
  * @File	ctmixer.h

sound/pci/ctxfi/ctpcm.h

 /* SPDX-License-Identifier: GPL-2.0-only */
-/**
+/*
  * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
  *
  * @File	ctpcm.h

sound/pci/ctxfi/ctresource.c

 // SPDX-License-Identifier: GPL-2.0-only
-/**
+/*
  * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
  *
  * @File	ctresource.c

sound/pci/ctxfi/ctresource.h

 /* SPDX-License-Identifier: GPL-2.0-only */
-/**
+/*
  * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
  *
  * @File	ctresource.h

sound/pci/ctxfi/ctsrc.c

 // SPDX-License-Identifier: GPL-2.0-only
-/**
+/*
  * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
  *
  * @File	ctsrc.c

sound/pci/ctxfi/ctsrc.h

 /* SPDX-License-Identifier: GPL-2.0-only */
-/**
+/*
  * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
  *
  * @File	ctsrc.h

sound/pci/ctxfi/ctvmem.c

 // SPDX-License-Identifier: GPL-2.0-only
-/**
+/*
  * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
  *
  * @File    ctvmem.c

sound/pci/ctxfi/ctvmem.h

 /* SPDX-License-Identifier: GPL-2.0-only */
-/**
+/*
  * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
  *
  * @File    ctvmem.h