ui/console: Remove QemuDmaBuf from "qemu/typedefs.h"

Files requiring QemuDmaBuf already include "ui/console.h".

To clean "qemu/typedefs.h", move the declaration to "ui/console.h"
(removing the forward declaration).

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
diff --git a/include/ui/console.h b/include/ui/console.h
index 853fcf4..c4f497c 100644
--- a/include/ui/console.h
+++ b/include/ui/console.h
@@ -179,7 +179,7 @@
     int minor_ver;
 };
 
-struct QemuDmaBuf {
+typedef struct QemuDmaBuf {
     int       fd;
     uint32_t  width;
     uint32_t  height;
@@ -187,7 +187,7 @@
     uint32_t  fourcc;
     uint32_t  texture;
     bool      y0_top;
-};
+} QemuDmaBuf;
 
 typedef struct DisplayChangeListenerOps {
     const char *dpy_name;