libperf: Add PERF_RECORD_COMPRESSED 'struct compressed_event' to perf/event.h

Move the PERF_RECORD_COMPRESSED 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/20190828135717.7245-21-jolsa@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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

@@ -318,4 +318,9 @@ struct feature_event {
 	char			 data[];
 };
 
+struct compressed_event {
+	struct perf_event_header header;
+	char			 data[];
+};
+
 #endif /* __LIBPERF_EVENT_H */

tools/perf/util/event.h

@@ -337,11 +337,6 @@ enum {
 	PERF_STAT_ROUND_TYPE__FINAL	= 1,
 };
 
-struct compressed_event {
-	struct perf_event_header	header;
-	char				data[];
-};
-
 union perf_event {
 	struct perf_event_header	header;
 	struct perf_record_mmap		mmap;