Fixed L+SELECT payload being broken (annoying LFN to 8.3 conversion r…

…ules). Now the payload is sel_NAME.bin

loader/source/main.c

@@ -51,7 +51,7 @@ void main(void)
        ((pressed & BUTTON_X) && LOAD_PAYLOAD("x")) ||
        ((pressed & BUTTON_Y) && LOAD_PAYLOAD("y")) ||
        ((pressed & BUTTON_R1) && LOAD_PAYLOAD("r")) ||
-       ((pressed & BUTTON_SELECT) && LOAD_PAYLOAD("select")) ||
+       ((pressed & BUTTON_SELECT) && LOAD_PAYLOAD("sel")) ||
        LOAD_PAYLOAD("def"))
         ((void (*)())PAYLOAD_ADDRESS)();
-}
+}