soundwire: Kconfig: fix help format

Move to the regular help format, --help-- is no longer recommended.
Reviewed-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/soundwire/Kconfig

@@ -4,7 +4,7 @@
 
 menuconfig SOUNDWIRE
 	bool "SoundWire support"
-	---help---
+	help
 	  SoundWire is a 2-Pin interface with data and clock line ratified
 	  by the MIPI Alliance. SoundWire is used for transporting data
 	  typically related to audio functions. SoundWire interface is