redhat-rpm-config: keep armv5tel default on non-hardfp v7, disable Thumb2
    
    We have decided to disable Thumb2 and this should have been pushed before.
    Since Thumb2/ARM are compatible at the call-site level due to interworking,
    we can just drop in replace existing builds with Thumb2 disabled later.
    
    Signed-off-by: Jon Masters <jcm@jonmasters.org>