[AVX-512] Fix duplicate column in AVX512 execution dependency table that was...

[AVX-512] Fix duplicate column in AVX512 execution dependency table that was preventing VMOVDQU32/VMOVDQA32 from being recognized. Fix a bug in the code that stops execution dependency fix from turning operations on 32-bit integer element types into operations on 64-bit integer element types.

llvm-svn: 277327