[ALSA] caiaq - input device support must depend on CONFIG_INPUT

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

sound/usb/Kconfig

@@ -51,6 +51,7 @@ config SND_USB_CAIAQ
 config SND_USB_CAIAQ_INPUT
 	bool "enable input device for controllers"
 	depends on SND_USB_CAIAQ
+	depends on INPUT=y || INPUT=SND_USB_CAIAQ
 	help
 	  Say Y here to support input controllers like buttons, knobs,
 	  alpha dials and analog pedals on the following products: