ARM: add test for last commit

This time I managed to forget the test.

Patch still by Stephen Kelly.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@188797 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Driver/arm-mfpu.c b/test/Driver/arm-mfpu.c
index 3e579f1..de28232 100644
--- a/test/Driver/arm-mfpu.c
+++ b/test/Driver/arm-mfpu.c
@@ -55,3 +55,7 @@
 // RUN:   | FileCheck --check-prefix=CHECK-NEON-FP-ARMV8 %s
 // CHECK-NEON-FP-ARMV8: "-target-feature" "+v8fp"
 // CHECK-NEON-FP-ARMV8: "-target-feature" "+neon"
+
+// RUN: %clang -target arm-linux-gnueabihf %s -### 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-HF %s
+// CHECK-HF: "-target-cpu" "arm1136jf-s"