rv: add a clang allmodconfig test

Signed-off-by: Björn Töpel <[email protected]>
[cherry picked and dropped the podman stuff]
Signed-off-by: Conor Dooley <[email protected]>

Author: bjorn-rivos

tests_rv/patch/build_allmod_rv64_clang/build_allmod_rv64_clang.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# Copyright (c) 2022 by Rivos Inc.
+
+tmpdir=$(mktemp -d)
+rc=0
+
+tuxmake --wrapper ccache --target-arch riscv --directory . \
+	--environment=KBUILD_BUILD_TIMESTAMP=@1621270510 \
+	--environment=KBUILD_BUILD_USER=tuxmake --environment=KBUILD_BUILD_HOST=tuxmake \
+	-o $tmpdir --toolchain llvm allmodconfig || rc=1
+
+if [ $rc -ne 0 ]; then
+  echo "Build failed" >&$DESC_FD
+fi
+
+rm -rf $tmpdir
+
+exit $rc

tests_rv/patch/build_allmod_rv64_clang/info.json

@@ -0,0 +1,5 @@
+{
+  "run": ["build_allmod_rv64_clang.sh"],
+  "pull-requests": true,
+  "disabled": true
+}