prh: Gert van der Plas changes for Sony ILCE-6000

I have created a commit with the changes by Gert van der Plas for the new Sony A6000 (ILCE-6000)

These changes work pretty well for me - and it would be great to get them into DT. I am not sure if Gert has submitted them for inclusion - I dont see a pull request, but these changes were all posted on DT-Devel.