[SCSI] 53c700: Allow setting burst length

This is a patch, which allows not only disabling bursting but to specify
different burst lenghts. This feature is needed to get the 53c700 driver
working for the onboard SCSI controller of SNI RM machines, which only
work reliably with a 4 word burst length.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/scsi/sim710.c b/drivers/scsi/sim710.c
index 551bacc..018c65f 100644
--- a/drivers/scsi/sim710.c
+++ b/drivers/scsi/sim710.c
@@ -123,6 +123,7 @@
 	hostdata->differential = differential;
 	hostdata->clock = clock;
 	hostdata->chip710 = 1;
+	hostdata->burst_length = 8;
 
 	/* and register the chip */
 	if((host = NCR_700_detect(&sim710_driver_template, hostdata, dev))