Add the following to the Virtual Machine's .vmx configuration file.
buslogic.nodriver = "FALSE"
Have a look at: Editing the .vmx file for your Fusion virtual machine (1014782)
Note the above link might give a Gateway Timeout as it looks like VMware is having troubles at the moment.
If you want the driver have a look at: /Applications/VMware Fusion.app/Contents/Resources/vmscsi.flp
