llvm-cov: Changed XFAIL targets to be more generic.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194622 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/tools/llvm-cov/llvm-cov.test b/test/tools/llvm-cov/llvm-cov.test
index c0383f0..b1a56a9 100644
--- a/test/tools/llvm-cov/llvm-cov.test
+++ b/test/tools/llvm-cov/llvm-cov.test
@@ -1,4 +1,4 @@
 RUN: cd %p/Inputs && llvm-cov -gcno=test.gcno -gcda=test.gcda \
 RUN:   | diff test.cpp.gcov -
 
-XFAIL: ppc64-linux-gnu, s390x-linux-gnu, arm
+XFAIL: powerpc64, s390x, arm