MVNETA_GMAC_ADVERT_SYM_FLOW_CTRL
mask |= MVNETA_GMAC_ADVERT_SYM_FLOW_CTRL;
val |= MVNETA_GMAC_ADVERT_SYM_FLOW_CTRL;
return !!(changed & MVNETA_GMAC_ADVERT_SYM_FLOW_CTRL);