freedreno/fdperf: set locale

Set local to get numbers printed w/ commas.. much easier to read that
way.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4119>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4119>

src/freedreno/perfcntrs/fdperf.c

@@ -28,6 +28,7 @@
 #include <err.h>
 #include <fcntl.h>
 #include <ftw.h>
+#include <locale.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -1085,6 +1086,8 @@ main(int argc, char **argv)
 
 	dev.groups = calloc(dev.ngroups, sizeof(struct counter_group));
 
+	setlocale(LC_NUMERIC, "en_US.UTF-8");
+
 	setup_counter_groups(groups);
 	restore_counter_groups();
 	config_restore();