FEC_X_WMRK
writel(0xF, fep->hwp + FEC_X_WMRK);
writel(FEC_TXWMRK_STRFWD, fep->hwp + FEC_X_WMRK);
FEC_X_WMRK, FEC_R_BOUND, FEC_R_FSTART, FEC_R_DES_START_1,
FEC_GRP_HASH_TABLE_LOW, FEC_X_WMRK, FEC_R_DES_START_0,
FEC_R_BOUND, FEC_R_FSTART, FEC_X_WMRK, FEC_X_FSTART, FEC_R_CNTRL,