port: allow using N64 control schemes

change from Ext to another control scheme to activate

note that this will require rebinding keys, as the default config is for the Ext scheme

src/game/menu.c

@@ -4639,7 +4639,7 @@ void menuProcessInput(void)
 				inputs.select = 1;
 			}
 
-			#ifndef PLATFORM_N64
+#ifndef PLATFORM_N64
 			// this seems sensible to achieve 1964 parity
 			if (buttonsnow & BUTTON_RADIAL) {
 				inputs.select = 1;
@@ -4648,8 +4648,8 @@ void menuProcessInput(void)
 			if (buttonsnow & BUTTON_WPNBACK) {
 				inputs.back = 1;
 			}
+#endif
 
-			#endif
 			if (buttonsnow & B_BUTTON) {
 				inputs.back = 1;
 			}