Add sceUsbGps module


"Unknown syscall: Module" showing up as Unimplemented HLE function sceUsbGpsOpen
![01](https://cloud.githubusercontent.com/assets/3481559/3893634/b985ca7a-223c-11e4-9ef6-057c285b595e.png)

Fixes https://github.com/hrydgard/ppsspp/issues/6711