More Adhoc functions implemented

Well, this test in my comment above was performed on a real PSP.  The pspsdk has been wrong in many cases, but whether it's right or wrong here the real PSP running real 6.60 firmware returns the values shown above when this function is called.

So the pspsdk can say that it shuts the PSP off when called for all I care.  Whatever a real PSP does seems way more convincing.

-[Unknown]