tools lib traceevent: Handle %z in bprint format

The %z printf specifier was not handled making trace_printk()s in the
kernel that used this break on output.

Reported-by: Shawn Bohrer <shawn.bohrer@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Shawn Bohrer <shawn.bohrer@gmail.com>
Link: http://lkml.kernel.org/r/20150324135922.844361717@goodmis.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
index e71c472..bdb1dd6 100644
--- a/tools/lib/traceevent/event-parse.c
+++ b/tools/lib/traceevent/event-parse.c
@@ -4008,6 +4008,10 @@
 				goto process_again;
 			case '.':
 				goto process_again;
+			case 'z':
+			case 'Z':
+				ls = 1;
+				goto process_again;
 			case 'p':
 				ls = 1;
 				/* fall through */