[libata] __iomem annotations for various drivers

diff --cc drivers/scsi/ahci.c
Simple merge

diff --cc drivers/scsi/ata_piix.c
Simple merge

diff --cc drivers/scsi/sata_promise.c
Simple merge

diff --cc drivers/scsi/sata_sil.c
Simple merge

diff --cc drivers/scsi/sata_svw.c
Simple merge

diff --cc drivers/scsi/sata_sx4.c
Simple merge