arm coresight txt triggers build warning: (was [PATCH] perf test: Fix test_arm_coresight.sh failures on Juno)

[Christian Borntraeger]

Probably not related to this patch set, but tools/perf/Documentation/perf-arm-coresight.txt

results in
cd tools/perf/Documentation/
make man
  ASCIIDOC perf-arm-coresight.xml
asciidoc: ERROR: perf-arm-coresight.txt: line 2: malformed manpage title
asciidoc: ERROR: perf-arm-coresight.txt: line 3: name section expected
asciidoc: FAILED: perf-arm-coresight.txt: line 3: section title expected

in linux-next.