lost sx1000 naming in sba_iommu

Mainly cosmetic, but Bjorn noticed I got a little over zealous in
cleaning out the sx1000 specific init routines in sba_iommu. This adds back in the ID->name mapping so it doesn't show up as "Unknown". Patch against latest 2.6.

Alex

@@ -1678,6 +1678,7 @@
 
 static struct ioc_iommu ioc_iommu_info[] __initdata = {
 	{ ZX1_IOC_ID, "zx1", ioc_zx1_init },
+	{ SX1000_IOC_ID, "sx1000", NULL },
 };
 
 static struct ioc * __init