[SCSI] WD33C93: let platform stub override no_sync/fast/dma_mode

SGI machines with WD33C93 allow usage of burst mode DMA, which increases
performance noticable. To make this selectable by the sgiwd93 stub,
setting the values for no_sync, fast and dma_mode has been moved to the
individual platform stubs.

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/drivers/scsi/sgiwd93.c b/drivers/scsi/sgiwd93.c
index 26cfc56..03e3596 100644
--- a/drivers/scsi/sgiwd93.c
+++ b/drivers/scsi/sgiwd93.c
@@ -263,10 +263,11 @@
 	regs.SASR = wdregs + 3;
 	regs.SCMD = wdregs + 7;
 
-	wd33c93_init(host, regs, dma_setup, dma_stop, WD33C93_FS_MHZ(20));
+	hdata->wh.no_sync = 0;
+	hdata->wh.fast = 1;
+	hdata->wh.dma_mode = CTRL_BURST;
 
-	if (hdata->wh.no_sync == 0xff)
-		hdata->wh.no_sync = 0;
+	wd33c93_init(host, regs, dma_setup, dma_stop, WD33C93_FS_MHZ(20));
 
 	err = request_irq(irq, sgiwd93_intr, 0, "SGI WD93", host);
 	if (err) {