perf tools: Fix makefile generation under dash
Under dash 'echo -n' yields '-n' to stdout. Use printf "" instead. Signed-off-by: NSergei Trofimovich <siarheit@google.com> Acked-by: NIngo Molnar <mingo@kernel.org> Acked-by: NJiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1437298205-29305-1-git-send-email-siarheit@google.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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