perf script: Make printing of dso a separate field option

The 'sym' option displays both the function name and the DSO it comes
from. Split the display of the dso into a separate option.  This allows
display of the ip address and symbol without the dso, thus shortening
line lengths - and decluttering the output a bit.

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1306528124-25861-3-git-send-email-dsahern@gmail.com
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
index d76af0f..de4178d 100644
--- a/tools/perf/util/session.h
+++ b/tools/perf/util/session.h
@@ -170,6 +170,6 @@
 void perf_session__print_ip(union perf_event *event,
 				 struct perf_sample *sample,
 				 struct perf_session *session,
-				 int print_sym);
+				 int print_sym, int print_dso);
 
 #endif /* __PERF_SESSION_H */