qt: switch to polling for status bar updating

src/86box.c

@@ -96,6 +96,7 @@
 #include <86box/thread.h>
 #include <86box/version.h>
 #include <86box/gdbstub.h>
+#include <86box/machine_status.h>
 
 // Disable c99-designator to avoid the warnings about int ng
 #ifdef __clang__
@@ -891,6 +892,8 @@ pc_init_modules(void)
 
 	video_reset_close();
 
+	machine_status_init();
+
 	return(1);
 }