Fix armips build on GCC 15

[Chlorobite]

GCC 15 complains about this header missing, so fix that. Build still works on GCC 14 after this change

[Nukley]

This pull request, alongside #77 and #96 gave me a functioning environment for the decomp under Arch Linux.

Considering the general lack of activity on this repo, and that the master branch has not had an update in around 2 years, I have decided to merge these pull requests and this one into here, with the hope that these 3 pull requests will get merged into this repo at some point, and make my fork irrelevant.

Just to be clear, I won't be making my own pull request, I find the idea of that rude. I'm just hoping this will help people as a temporary fix.

[bradleycha]

Tested and compilation works for me again. Hopefully we'll get a little break before the next GCC update wrecks the build system again.

[manmountain]

This, #77 and #96 should be merged as stated by @Nukley to build on Ubuntu 25.04

[Project516]

This, #77 and #96 should be merged as stated by @Nukley to build on Ubuntu 25.04

Are the repository maintainers going to accept prs?