[SCSI] tmscsim: set max_sectors

AM53C974A's Start Transfer Counter register has 24 bits, thus
maximum transfer length is 16MiB. But the maximum I can test
is 8MiB, so use that until somebody tests 16MiB.

Signed-off-by: Guennadi Liakhovetski <[e-mail]>
Signed-off-by: James Bottomley <[e-mail]>

drivers/scsi/tmscsim.c

···
 	.sg_tablesize		= SG_ALL,
 	.cmd_per_lun		= 1,
 	.use_clustering		= ENABLE_CLUSTERING,
+	.max_sectors		= 0x4000, /* 8MiB = 16 * 1024 * 512 */
 };
 
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