update: it worked!!!!!
you have to perform the actions as describe above, with one exception. You have to set the mode to SATA in the bios and use the following for your simple.map and pci.ids:
10de:0ad0 0000:0000 storage sata_nv.0
0ad0 MCP78 SATA Controller
Great, thanks for the file!
But that only helps to detect the controller exactly, but there are no harddisks shown.
Do you use new harddisks (empty) oder harddisks which are used together with ESXi 3.5 before (containing some vm's)?