[PATCH] perf evsel: Fix a build failure on cross compilation

[Namhyung Kim <namhyung@kernel.org>]

From: Namhyung Kim <namhyung.kim@lge.com>

The commit c410431cefefd ("perf tools: Reconstruct event
with modifiers from perf_event_attr") added the line, but
it's broken since it needs to go up 3 directories to get
to the kernel root directory, not 2.

However host gcc contains /usr/local/include in its
search path, so that it can find the perf_event.h in
/usr/include. This why we didn't notice the problem yet.
But when I tried to cross compile it appears like:

      CC util/evsel.o
  util/evsel.c:18:44: error: ../../include/linux/perf_event.h: No such file or directory
  make: *** [util/evsel.o] Error 1

Looking at the source, it isn't needed at all as evsel.h
already included the perf_event.h. So simply remove it
would solve the problem.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
 tools/perf/util/evsel.c |    1 -
 1 file changed, 1 deletion(-)

diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 876f639d69ed..3d1f6968f175 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -15,7 +15,6 @@
 #include "cpumap.h"
 #include "thread_map.h"
 #include "target.h"
-#include "../../include/linux/perf_event.h"
 
 #define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))
 #define GROUP_FD(group_fd, cpu) (*(int *)xyarray__entry(group_fd, cpu, 0))
-- 
1.7.10.2