[compiler-rt] [compiler-rt] Fix `addtf3_test.c` being skipped due to misplaced include (PR #134106)

[Pranav Kant via llvm-commits]

https://github.com/pranavk approved this pull request.

I didn't verify the new hexadecimal uint64 hi and lo numbers but assuming they are correct, LGTM

https://github.com/llvm/llvm-project/pull/134106