Fix compilation of vme4l driver

Created by: HarryWaschkeit

In issue #11 there were changes introduced that lead to compile errors in VME for Linux driver. Apparently nobody ever tried to build that, let alone testing the changes ... I had a look at the changes done back then and found the problematic part in dmaSetup method implementations to be unnecessary: none of the extra parameters deviating from the prototype is used. So even done without knowing the cause to change this function prototype in the first place, my changes should do no (extra) harm. Additional calamity might arise once I get to testing that stuff ... ;-/

Edit: I should have noted that also the latest stable release contains this problem and my changes also apply well on those sources.