[gnome-settings-daemon] power: Fix compile-time warning

[Bastien Nocera <hadess src gnome org>]

commit d423475e8de82e028bee03fc2a3662ba1c0e2d5d
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Thu Jan 29 07:15:16 2015 +0200

    power: Fix compile-time warning
    
    gpm-common.c:201:9: warning: implicit declaration of function ‘gnome_settings_get_chassis_type’ 
[-Wimplicit-function-declaration]
            type = gnome_settings_get_chassis_type ();
    
    https://bugzilla.gnome.org/show_bug.cgi?id=743674

 plugins/power/gpm-common.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/plugins/power/gpm-common.c b/plugins/power/gpm-common.c
index c0cc1bc..5de5899 100644
--- a/plugins/power/gpm-common.c
+++ b/plugins/power/gpm-common.c
@@ -35,6 +35,7 @@
 #define GNOME_DESKTOP_USE_UNSTABLE_API
 #include <libgnome-desktop/gnome-rr.h>
 
+#include "gnome-settings-bus.h"
 #include "gpm-common.h"
 #include "gsd-power-constants.h"
 #include "gsd-power-manager.h"