automation/eclair_analysis: avoid violation of MISRA Rule 2.1

The presence of an unlinked object file triggers a violation
of MISRA C Rule 2.1, which is deviated, as it's not part of
the final Xen binary.

No functional change.

Signed-off-by: Nicola Vetrini <nicola.vetrini@bugseng.com>
Acked-by: Stefano Stabellini <sstabellini@kernel.org>

automation/eclair_analysis/ECLAIR/deviations.ecl

@@ -28,6 +28,11 @@ not executable, and therefore it is safe for them to be unreachable."
 -config=MC3R1.R2.1,ignored_stmts+={"any()", "pure_decl()"}
 -doc_end
 
++-doc_begin="The following autogenerated file is not linked deliberately."
++-file_tag+={C_runtime_failures,"^automation/eclair_analysis/C-runtime-failures\\.rst\\.c$"}
++-config=MC3R1.R2.1,reports+={deliberate, "any_area(any_loc(file(C_runtime_failures)))"}
++-doc_end
+
 -doc_begin="Proving compliance with respect to Rule 2.2 is generally impossible:
 see https://arxiv.org/abs/2212.13933 for details. Moreover, peer review gives us
 confidence that no evidence of errors in the program's logic has been missed due