perf tools: Remove debug.h from header files not needing it

And fix the fallout, adding it to places that must have it since they
use its definitions.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-1s3jel4i26chq2g0lydoz7i3@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/stat.c

@@ -3,6 +3,7 @@
 #include <inttypes.h>
 #include <math.h>
 #include "counts.h"
+#include "debug.h"
 #include "stat.h"
 #include "target.h"
 #include "evlist.h"