media: Kconfig files: use the right help coding style

Checkpatch wants to use 'help' instead of '---help---':

	WARNING: prefer 'help' over '---help---' for new help texts

Let's change it globally at the media subsystem, as otherwise people
would keep using the old way.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

drivers/media/usb/pulse8-cec/Kconfig

@@ -4,7 +4,7 @@ config USB_PULSE8_CEC
 	select CEC_CORE
 	select SERIO
 	select SERIO_SERPORT
-	---help---
+	help
 	  This is a cec driver for the Pulse Eight HDMI CEC device.
 
 	  To compile this driver as a module, choose M here: the