[SCSI] aacraid: driver version update

Received from Mark Salyzyn from Adaptec.

Fixes a bug in check_revision.  It should return the driver version not
the firmware version.
Update driver version number.
Update driver version string.

Signed-off-by: Mark Haverkamp <markh@osdl.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>