[X86] Improve readability of test/CodeGen/X86/lzcnt-zext-cmp.ll by adding a common check prefix ALL. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294938 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed