[X86][Skylake] Replacing -mcpu=skx by -mattr in a codegen test. NFC.

NFC.
Replacing -mcpu=skx by -mattr in the run command of the codegen test: avx512-gather-scatter-intrin.ll.

Reviewers: delena
Revision: https://reviews.llvm.org/D37799

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@313144 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed