console: make DisplayState private to console.c

With gui_* being moved to console.c nobody outside console.c needs
access to DisplayState fields any more.  Make the struct private.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

include/ui/console.h

@@ -182,14 +182,6 @@ struct DisplayChangeListener {
     QLIST_ENTRY(DisplayChangeListener) next;
 };
 
-struct DisplayState {
-    struct QEMUTimer *gui_timer;
-    bool have_gfx;
-    bool have_text;
-
-    QLIST_HEAD(, DisplayChangeListener) listeners;
-};
-
 DisplayState *init_displaystate(void);
 DisplaySurface* qemu_create_displaysurface_from(int width, int height, int bpp,
                                                 int linesize, uint8_t *data,

ui/console.c

@@ -157,6 +157,14 @@ struct QemuConsole {
     QEMUTimer *kbd_timer;
 };
 
+struct DisplayState {
+    struct QEMUTimer *gui_timer;
+    bool have_gfx;
+    bool have_text;
+
+    QLIST_HEAD(, DisplayChangeListener) listeners;
+};
+
 static DisplayState *display_state;
 static QemuConsole *active_console;
 static QemuConsole *consoles[MAX_CONSOLES];