perf stat: Move csv_* to 'struct perf_stat_config'

Move the static csv_* variables to 'struct perf_stat_config', so that it
can be passed around and used outside the 'perf stat' command.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20180830063252.23729-21-jolsa@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/stat.h

@@ -91,6 +91,7 @@ struct perf_stat_config {
 	bool			 scale;
 	bool			 no_inherit;
 	bool			 identifier;
+	bool			 csv_output;
 	FILE			*output;
 	unsigned int		 interval;
 	unsigned int		 timeout;
@@ -98,6 +99,7 @@ struct perf_stat_config {
 	int			 times;
 	struct runtime_stat	*stats;
 	int			 stats_num;
+	const char		*csv_sep;
 };
 
 void update_stats(struct stats *stats, u64 val);