Input: pcspkr - remove negative dependency on snd-pcsp

It should be possible to build pcspkr driver together with snd-pcsp,
even though tehy can not be used together.

Signed-off-by: Stas Sergeev <[e-mail]>
Signed-off-by: Dmitry Torokhov <[e-mail]>

drivers/input/misc/Kconfig

···
 config INPUT_PCSPKR
 	tristate "PC Speaker support"
 	depends on PCSPKR_PLATFORM
-	depends on SND_PCSP=n
 	help
 	  Say Y here if you want the standard PC Speaker to be used for
 	  bells and whistles.