update SDL soruce to 2.0.14

Edward Rudd

2021-06-15 dec7875a6e23212021e4d9080330a42832dfe02a

 source/src/video/pandora/SDL_pandora.c

@@ -173,7 +173,7 @@
    display.current_mode = current_mode;
    display.driverdata = NULL;

    SDL_AddVideoDisplay(&display);
    SDL_AddVideoDisplay(&display, SDL_FALSE);

    return 1;
}