[PATCH] Fix usb interface change in hisax st5481_*

This makes the HISAX ST5481 driver build again with 2.6.0-test3 where
the usb_host_config structure has changed.

drivers/isdn/hisax/st5481_b.c

@@ -254,7 +254,7 @@ static int st5481_setup_b_out(struct st5481_bcs *bcs)
 
 	DBG(4,"");
 
-	altsetting = &(dev->config->interface[0].altsetting[3]);
+	altsetting = &(dev->config->interface[0]->altsetting[3]);
 
 	// Allocate URBs and buffers for the B channel out
 	endpoint = &altsetting->endpoint[EP_B1_OUT - 1 + bcs->channel * 2];

drivers/isdn/hisax/st5481_d.c

@@ -658,7 +658,7 @@ static int __devinit st5481_setup_d_out(struct st5481_adapter *adapter)
 
 	DBG(2,"");
 
-	altsetting = &(dev->config->interface[0].altsetting[3]);
+	altsetting = &(dev->config->interface[0]->altsetting[3]);
 
 	// Allocate URBs and buffers for the D channel out
 	endpoint = &altsetting->endpoint[EP_D_OUT-1];

drivers/isdn/hisax/st5481_usb.c

@@ -258,7 +258,7 @@ int __devinit st5481_setup_usb(struct st5481_adapter *adapter)
 	}
 
 	
-	altsetting = &(dev->config->interface[0].altsetting[3]);	
+	altsetting = &(dev->config->interface[0]->altsetting[3]);	
 
 	// Check if the config is sane
 	if ( altsetting->desc.bNumEndpoints != 7 ) {