[ALSA] Repair snd-usb-usx2y over OHCI

The previous patch 'Repair snd-usb-usx2y for usb 2.6.18' assumed
urb->start_frame roll over beyond MAX_INT for both UHCI & OHCI.
This isn't true until now (kernel 2.6.20).
Fix this by only looking at the common between OHCI & UHCI Frame number
range.
This is for mainline and stable kernels >= 2.6.18.

Signed-off-by: Karsten Wiese <fzu@wemgehoertderstaat.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

sound/usb/usx2y/usbusx2yaudio.c

@@ -322,7 +322,7 @@ static void i_usX2Y_urb_complete(struct urb *urb)
 		usX2Y_error_urb_status(usX2Y, subs, urb);
 		return;
 	}
-	if (likely(urb->start_frame == usX2Y->wait_iso_frame))
+	if (likely((urb->start_frame & 0xFFFF) == (usX2Y->wait_iso_frame & 0xFFFF)))
 		subs->completed_urb = urb;
 	else {
 		usX2Y_error_sequence(usX2Y, subs, urb);

sound/usb/usx2y/usx2yhwdeppcm.c

@@ -243,7 +243,7 @@ static void i_usX2Y_usbpcm_urb_complete(struct urb *urb)
 		usX2Y_error_urb_status(usX2Y, subs, urb);
 		return;
 	}
-	if (likely(urb->start_frame == usX2Y->wait_iso_frame))
+	if (likely((urb->start_frame & 0xFFFF) == (usX2Y->wait_iso_frame & 0xFFFF)))
 		subs->completed_urb = urb;
 	else {
 		usX2Y_error_sequence(usX2Y, subs, urb);