INI option to disable boot screen of some cores.

cfg.cpp

@@ -12,6 +12,7 @@ cfg_t cfg;
 void MiSTer_ini_parse()
 {
 	memset(&cfg, 0, sizeof(cfg));
+	cfg.bootscreen = 1;
 	ini_parse(&ini_cfg);
 }
 
@@ -37,6 +38,7 @@ const ini_var_t ini_vars[] = {
 	{ "DVI_MODE", (void*)(&(cfg.dvi)), UINT8, 0, 1, 1 },
 	{ "KBD_NOMOUSE", (void*)(&(cfg.kbd_nomouse)), UINT8, 0, 1, 1 },
 	{ "MOUSE_THROTTLE", (void*)(&(cfg.mouse_throttle)), UINT8, 1, 100, 1 },
+	{ "BOOTSCREEN", (void*)(&(cfg.bootscreen)), UINT8, 0, 1, 1 },
 };
 
 // mist ini config