VIRTCHNL_1588_PTP_CAP_READ_PHC
if (!iavf_ptp_cap_supported(adapter, VIRTCHNL_1588_PTP_CAP_READ_PHC)) {
bool phc = iavf_ptp_cap_supported(adapter, VIRTCHNL_1588_PTP_CAP_READ_PHC);
.caps = VIRTCHNL_1588_PTP_CAP_READ_PHC |
VIRTCHNL_1588_PTP_CAP_READ_PHC;