ramfb: enable vgabios

Add vgabios binary to fw_cfg vgaroms.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

hw/display/ramfb.c

@@ -88,6 +88,7 @@ RAMFBState *ramfb_setup(Error **errp)
 
     s = g_new0(RAMFBState, 1);
 
+    rom_add_vga("vgabios-ramfb.bin");
     fw_cfg_add_file_callback(fw_cfg, "etc/ramfb",
                              NULL, ramfb_fw_cfg_write, s,
                              &s->cfg, sizeof(s->cfg), false);