libperf: Add PERF_RECORD_HEADER_ATTR 'struct attr_event' to perf/event.h

Move the PERF_RECORD_HEADER_ATTR event definition to libperf's event.h.

In order to keep libperf simple, we switch 'u64/u32/u16/u8' types used
events to their generic '__u*' versions.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190828135717.7245-2-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/lib/include/perf/event.h

@@ -109,4 +109,10 @@ struct perf_record_sample {
 	__u64			 array[];
 };
 
+struct attr_event {
+	struct perf_event_header header;
+	struct perf_event_attr	 attr;
+	__u64			 id[];
+};
+
 #endif /* __LIBPERF_EVENT_H */

tools/perf/util/event.h

@@ -363,12 +363,6 @@ struct cpu_map_event {
 	struct cpu_map_data		data;
 };
 
-struct attr_event {
-	struct perf_event_header header;
-	struct perf_event_attr attr;
-	u64 id[];
-};
-
 enum {
 	PERF_EVENT_UPDATE__UNIT  = 0,
 	PERF_EVENT_UPDATE__SCALE = 1,