[ALSA] SC6000 driver - add HAS_IOPORT dependency


Signed-off-by: Jaroslav Kysela <perex@suse.cz>
diff --git a/sound/isa/Kconfig b/sound/isa/Kconfig
index 08a26d8..2639a6a 100644
--- a/sound/isa/Kconfig
+++ b/sound/isa/Kconfig
@@ -193,7 +193,7 @@
 
 config SND_SC6000
 	tristate "Gallant SC-6000, Audio Excel DSP 16"
-	depends on SND
+	depends on SND && HAS_IOPORT
 	select SND_AD1848_LIB
 	select SND_OPL3_LIB
 	select SND_MPU401_UART