[llvm] [GlobalISel] Change MatchTable entries to 1 byte each (PR #74429)

[Pierre van Houtryve via llvm-commits]

Pierre-vh wrote:

> > Breaks https://lab.llvm.org/buildbot/#/builders/5/builds/39231/steps/9/logs/stdio Could you please fix or revert
> 
> Bot should be fixed with [eabf7ec](https://github.com/llvm/llvm-project/commit/eabf7ec3f3d4688ea0f9da24038462362837d7ff)
> 
> BTW. Does it need to take into account `llvm::endian`?

I don't think it needs to, the host machine should read the value as big/little endian naturally. The encoding part in TableGen is endian-aware and encodes it depending on big/little endian though

https://github.com/llvm/llvm-project/pull/74429