lint

s390x: add patch reverting upstream commit fa1518875286 #740

Job	Run time
Lint	8s
ShellCheck	5s
Unittests	3s
Validate matrix.py (kernel-patches, bpf)	3s
Validate matrix.py (kernel-patches, vmtest)	3s
Validate matrix.py (foo, bpf)	6s
Validate matrix.py (kernel-patches, bar)	4s
Validate matrix.py (foo, bar)	4s
Validate matrix.py (foo, vmtest)	5s
	41s

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