Upgrade numactl to 2.0.12
    
    The existing patches can be dropped, since both are already present upstream
    (and one of them wasn't being applied anyways.)
    
    The newer config.{guess,sub} can also be dropped, since numactl 2.0.12 package
    contains scripts dating from 2017-11, which contain riscv64 arch-specific bits.
    
    Signed-off-by: Filipe Brandenburger <filbranden@gmail.com>