[Vita] Clock displaying wrong time

On the Vita, the clock at the top of the mGBA menu is off by 2 hours.

**Version:** mGBA-nightly-2017-04-08-vita-19d0ca3b8b63dd25c17539357d09a47b44d2e6db

## Example in my case:

**Configured "Time Zone":** UTC+01:00 Berlin
**Vita time:** 20:50
**mGBA time:**  18:50:00