[Builtins] Mark mulsc3_test as UNSUPPORTED for armhf; NFC
The same test fails on clang-cmake-armv7-a15-full biuld bot
but passes the clang-cmake-thumbv7-a15-full.
For now, we mark it as UNSUPPORTED for armhf target.
Bug 32457 tracks it.
// RUN: %clang_builtins %s %librt -lm -o %t && %run %t
+// UNSUPPORTED: armhf-target-arch
+// see pr 32475.
//===-- mulsc3_test.c - Test __mulsc3 -------------------------------------===//
//
// The LLVM Compiler Infrastructure
