Update mgba to 59ebf1c12dcbbe0141000cddccf667cd42e386a1

[CasualPokePlayer]

A prerequisite for #11611

[AdmiralCurtiss]

You sure you don't want to update to current master? Or at the very least to mgba-emu/mgba@5f3ee83?

[CasualPokePlayer]

I can go update it to the latest master (this was the latest master at the time I originally did this update in the other PR, a look at later commits shows no changes to cmake scripts mGBA side so the project files shouldn't need another update)

EDIT: This is turning out more complicated as something is severely wrong with the submodule commit history, dunno if that's my fault here locally or something that was always wrong?

[AdmiralCurtiss]

Uh, maybe because it's checked out shallow by default? Maybe try something like

git submodule deinit Externals/mGBA/mgba
git submodule update --init --recursive --no-recommend-shallow Externals/mGBA/mgba
cd Externals/mGBA/mgba
git pull

[CasualPokePlayer]

Still seems screwy, I think it's something fubared locally on my side, it seems fine if I do it from a fresh dolphin repo clone.