Don't require tests on s390x

We need to do this temporarily to unlock the mass rebuild.
Related: rhbz#1991688

clang.spec

@@ -78,7 +78,7 @@
 
 Name:		%pkg_name
 Version:	%{maj_ver}.%{min_ver}.%{patch_ver}%{?rc_ver:~rc%{rc_ver}}
-Release:	3%{?dist}
+Release:	4%{?dist}
 Summary:	A C language family front-end for LLVM
 
 License:	NCSA
@@ -490,8 +490,9 @@ ln -s %{_datadir}/clang/clang-format-diff.py %{buildroot}%{_bindir}/clang-format
 %if !0%{?compat_build}
 # requires lit.py from LLVM utilities
 # FIXME: Fix failing ARM tests
+# FIXME: Don't require s390x checks due to: rhbz#1994082
 LD_LIBRARY_PATH=%{buildroot}/%{_libdir} %cmake_build --target check-all || \
-%ifarch %{arm}
+%ifarch %{arm} s390x
 :
 %else
 false
@@ -582,6 +583,9 @@ false
 
 %endif
 %changelog
+* Mon Aug 16 2021 Tom Stellard <tstellar@redhat.com> - 12.0.1-4
+- Don't requirest tests on s390x
+
 * Mon Aug 16 2021 sguelton@redhat.com - 12.0.1-3
 - rebuilt