pandora: use hw scaler (resolves 32x+sms), frontend refactoring

git-svn-id: file:///home/notaz/opt/svn/PicoDrive/platform@885 be3aeb3a-fb24-0410-a615-afba39da0efa

gp2x/emu.c

@@ -13,6 +13,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <unistd.h>
 
 #include "plat_gp2x.h"
 #include "soc.h"
@@ -871,6 +872,10 @@ void pemu_loop_prep(void)
 	vidResetMode();
 	scaling_update();
 
+	// dirty buffers better go now than during gameplay
+	sync();
+	sleep(0);
+
 	pemu_sound_start();
 }