ASoC: pcm3060: Improve stylistics of file comments

Modified the complete file comments in C++ style, to make them look more
intentional
Signed-off-by: Kirill Marinushkin <kmarinushkin@birdec.tech>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/pcm3060-i2c.c

 // SPDX-License-Identifier: GPL-2.0
-/*
- * PCM3060 I2C driver
- *
- * Copyright (C) 2018 Kirill Marinushkin <kmarinushkin@birdec.tech>
- */
+//
+// PCM3060 I2C driver
+//
+// Copyright (C) 2018 Kirill Marinushkin <kmarinushkin@birdec.tech>
 
 #include <linux/i2c.h>
 #include <linux/module.h>

sound/soc/codecs/pcm3060-spi.c

 // SPDX-License-Identifier: GPL-2.0
-/*
- * PCM3060 SPI driver
- *
- * Copyright (C) 2018 Kirill Marinushkin <kmarinushkin@birdec.tech>
- */
+//
+// PCM3060 SPI driver
+//
+// Copyright (C) 2018 Kirill Marinushkin <kmarinushkin@birdec.tech>
 
 #include <linux/module.h>
 #include <linux/spi/spi.h>

sound/soc/codecs/pcm3060.c

 // SPDX-License-Identifier: GPL-2.0
-/*
- * PCM3060 codec driver
- *
- * Copyright (C) 2018 Kirill Marinushkin <kmarinushkin@birdec.tech>
- */
+//
+// PCM3060 codec driver
+//
+// Copyright (C) 2018 Kirill Marinushkin <kmarinushkin@birdec.tech>
 
 #include <linux/module.h>
 #include <sound/pcm_params.h>