perf tests: Factor out fake_setup_machine()

The fake_setup_machine() is for setting up a environment for testing
various hists operations. As it'll be used for other test cases it'd
better factoring it out.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/1398396494-12811-1-git-send-email-namhyung@kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>

diff --cc tools/perf/Makefile.perf
Simple merge

diff --cc tools/perf/tests/hists_common.c
Simple merge

diff --cc tools/perf/tests/hists_common.h
Simple merge

diff --cc tools/perf/tests/hists_link.c
Simple merge