libata: release prep (bump versions, etc.)

- bump versions where necessary
- remove two duplicated+outdated doc comments
- add MODULE_VERSION() to AHCI driver
diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c
index c562369..e3b9692 100644
--- a/drivers/scsi/ahci.c
+++ b/drivers/scsi/ahci.c
@@ -1105,6 +1105,7 @@
 MODULE_DESCRIPTION("AHCI SATA low-level driver");
 MODULE_LICENSE("GPL");
 MODULE_DEVICE_TABLE(pci, ahci_pci_tbl);
+MODULE_VERSION(DRV_VERSION);
 
 module_init(ahci_init);
 module_exit(ahci_exit);