single function devices handled wrong

[gwoplock]

For single function devices you can't check the vender ID b/c they will report valid for all functions, it will just report the same as funct. 1. to fix this check for the multifunction header bit

[gwoplock]

Also cant break when hitting a unused function. they can be spread out.

[gwoplock]

The main issue may not be true. will fix if becomes an issue

[gwoplock]

I think this is true upon further testing. Even more testing Needed.