[SG] Update drivers to use sg helpers

arch/um/drivers/ubd_kern.c

drivers/ata/libata-core.c

drivers/ata/libata-scsi.c

drivers/block/DAC960.c

drivers/block/cciss.c

drivers/block/cpqarray.c

drivers/block/cryptoloop.c

drivers/block/sunvdc.c

drivers/block/sx8.c

drivers/block/ub.c

drivers/block/viodasd.c

drivers/ide/cris/ide-cris.c

drivers/ide/ide-probe.c

drivers/ide/ide-taskfile.c

drivers/ide/mips/au1xxx-ide.c

drivers/ieee1394/dma.c

drivers/ieee1394/sbp2.c

drivers/infiniband/core/umem.c

drivers/infiniband/hw/ipath/ipath_dma.c

drivers/infiniband/hw/ipath/ipath_mr.c