[PGO] Rename the profdata filename to avoid the conflict b/w tests.

Two tests diag_mismatch.ll and diag_no_funcprofdata.ll generates the same
profdata filename which can conflict in current test runs. This patch
renames them to have different names. 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255158 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed