message: Pass dtype_test w/o 64-bit float support
diff: #include "testing/plaidml_config.h"
  #include "tile/platform/local_machine/local_machine.pb.h"
  -using ::testing::NotNull;
  using ::testing::IsVaiStatus;
  +using ::testing::NotNull;
  extern "C" void vai_internal_set_vlog(size_t);
  @@ -224,6 +224,11 @@ TEST_P(DTypeTest, MulSum) {
  plaidml_set_invoker_output(invoker.get(), "A", a.get());
  std::unique_ptr<plaidml_invocation> invocation{plaidml_schedule_invocation(ctx.get(), invoker.get())};
  + if (dtype == PLAIDML_DATA_FLOAT64 && vai_last_status() == VAI_STATUS_UNIMPLEMENTED) {
  + SUCCEED() << "Devices are allowed to return VAI_STATUS_UNIMPLEMENTED for 64-bit float operations";
  + return;
  + }
  +
  EXPECT_THAT(vai_last_status(), IsVaiStatus(VAI_STATUS_OK));
  {
  