PowerPC: fix __builtin_eh_return_data_regno return


git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@173188 91177308-0d34-0410-b5e6-96231b3b80d8
Add x86 requirement to hopefully fix ppc bots.

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@173190 91177308-0d34-0410-b5e6-96231b3b80d8
Second attempt to fix ppc bots.

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@173193 91177308-0d34-0410-b5e6-96231b3b80d8