[retro-gtk/gamepad] Add some traces

[Adrien Plazas <aplazas src gnome org>]

commit 51a8ee06c7b3189b4a9d06f42a5147f9d649d40c
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Tue Jul 25 15:36:26 2017 +0200

    Add some traces

 retro-gtk/input/retro-gamepad.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/retro-gtk/input/retro-gamepad.c b/retro-gtk/input/retro-gamepad.c
index eec4c7a..29767df 100644
--- a/retro-gtk/input/retro-gamepad.c
+++ b/retro-gtk/input/retro-gamepad.c
@@ -101,6 +101,8 @@ retro_gamepad_button_press_event (RetroGamepad *self,
 
   retro_button = button_to_retro_button (button);
 
+  g_message ("retro_gamepad_button_press_event: button %u retro button %u", button, retro_button);
+
   if (retro_button == RETRO_JOYPAD_ID_COUNT)
     return;
 
@@ -117,6 +119,8 @@ retro_gamepad_button_release_event (RetroGamepad *self,
 
   retro_button = button_to_retro_button (button);
 
+  g_message ("retro_gamepad_button_release_event: button %u retro button %u", button, retro_button);
+
   if (retro_button == RETRO_JOYPAD_ID_COUNT)
     return;