ALSA: Add missing __devexit_p() markers

3 ISA sound drivers lack their __devexit_p() markers, which would
cause build failures when the kernel is built without hotplug support.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/isa/gus/gusextreme.c b/sound/isa/gus/gusextreme.c
index 180a8de..65e4b18 100644
--- a/sound/isa/gus/gusextreme.c
+++ b/sound/isa/gus/gusextreme.c
@@ -348,7 +348,7 @@
 static struct isa_driver snd_gusextreme_driver = {
 	.match		= snd_gusextreme_match,
 	.probe		= snd_gusextreme_probe,
-	.remove		= snd_gusextreme_remove,
+	.remove		= __devexit_p(snd_gusextreme_remove),
 #if 0	/* FIXME */
 	.suspend	= snd_gusextreme_suspend,
 	.resume		= snd_gusextreme_resume,