tools: Copy coresight-pmu.h header file needed by perf tools

Directly accessing kernel files is not allowed anymore.  As such making
file coresight-pmu.h accessible by the perf tools and complain if this
copy strays from the one found in the main kernel tree.

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Vince Weaver <vince@deater.net>
Link: http://lkml.kernel.org/r/1470932464-726-2-git-send-email-mathieu.poirier@linaro.org


Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>