perf_counter: Fix userspace build

recent userspace (F11) seems to already include the
linux/unistd.h bits which means we cannot include the version
in the kernel sources due to the header guards being the same.

Ensure we include the kernel version first.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: John Kacur <jkacur@redhat.com>
LKML-Reference: <20090523163012.739756497@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/Documentation/perf_counter/builtin-stat.c b/Documentation/perf_counter/builtin-stat.c
index 03518d7..8ae01d5 100644
--- a/Documentation/perf_counter/builtin-stat.c
+++ b/Documentation/perf_counter/builtin-stat.c
@@ -61,6 +61,7 @@
   * Released under the GPL v2. (and only v2, not any later version)
   */
 
+#include "perf.h"
 #include "util/util.h"
 
 #include <getopt.h>
@@ -83,10 +84,6 @@
 #include <linux/unistd.h>
 #include <linux/types.h>
 
-#include "../../include/linux/perf_counter.h"
-
-#include "perf.h"
-
 #define EVENT_MASK_KERNEL		1
 #define EVENT_MASK_USER			2