ALSA: asihpi - Remove unused subsys pointer from all HPI functions.

asihpi.c don't link playback and capture streams, there is too much
offset between them.

Signed-off-by: Eliot Blennerhassett <eblennerhassett@audioscience.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/asihpi/hpioctl.c b/sound/pci/asihpi/hpioctl.c
index dd8cadf..4bd3278 100644
--- a/sound/pci/asihpi/hpioctl.c
+++ b/sound/pci/asihpi/hpioctl.c
@@ -392,7 +392,7 @@
 	adapter.type = hr.u.s.aw_adapter_list[adapter.index];
 	hm.adapter_index = adapter.index;
 
-	err = hpi_adapter_open(NULL, adapter.index);
+	err = hpi_adapter_open(adapter.index);
 	if (err)
 		goto err;