There are too many supported Realtek devices so avoid activating the
rt loader recipe in the default builds. Just start with the LGS310C.
Signed-off-by: Markus Stockhausen <markus.stockhausen@gmx.de>
Link: https://github.com/openwrt/openwrt/pull/18397
Signed-off-by: Robert Marko <robimarko@gmail.com>