disable partially busted SingleVariantUnion tests on aarch64

Author: lqd

patches/0002-abi-cafe-Disable-broken-tests.patch

@@ -20,6 +20,10 @@ index acfce38..b3ab842 100644
 +        result.check = Busted(Check);
 +    }
 +
++    if cfg!(target_arch = "aarch64") && test.test == "SingleVariantUnion" && test.options.convention == CallingConvention::C && test.options.repr == LangRepr::C {
++        result.check = Busted(Check);
++    }
++
 +    if cfg!(target_arch = "aarch64") && test.test == "OptionU128" && test.options.convention == CallingConvention::Rust && test.options.repr == LangRepr::C {
 +        result.check = Busted(Check);
 +    }