Adjust system NSS patch for -Wl,--as-needed.
    
    redhat-rpm-config package turned on -Wl,--as-needed linker
    flag by default, breaking the SunEC via system NSS provider
    build. This fixes it by filtering -Wl,--as-needed from
    linker flags when SunEC provider is being built.
    
    Resolves: RHBZ#1623399