perf hists: Fix indent for multiple hierarchy sort key

When multiple sort keys are used in a single hierarchy, it should indent
using number of hierarchy levels instead of number of sort keys.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1457361308-514-5-git-send-email-namhyung@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c
index 95795ef..f03c4f7 100644
--- a/tools/perf/ui/hist.c
+++ b/tools/perf/ui/hist.c
@@ -740,6 +740,7 @@
 		node->level = fmt->level;
 		perf_hpp_list__init(&node->hpp);
 
+		hists->nr_hpp_node++;
 		list_add_tail(&node->list, &hists->hpp_formats);
 	}