[libata] Bump versions

Update major version for libata, and several drivers.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/scsi/sata_vsc.c b/drivers/scsi/sata_vsc.c
index 6d0c4f1..01893a0 100644
--- a/drivers/scsi/sata_vsc.c
+++ b/drivers/scsi/sata_vsc.c
@@ -47,7 +47,7 @@
 #include <linux/libata.h>
 
 #define DRV_NAME	"sata_vsc"
-#define DRV_VERSION	"1.2"
+#define DRV_VERSION	"2.0"
 
 enum {
 	/* Interrupt register offsets (from chip base address) */