NVM_COMPAT
word = NVM_COMPAT;
ret_val = e1000_read_nvm(hw, NVM_COMPAT, 1, &nvm_data);
ret_val = hw->nvm.ops.read(hw, NVM_COMPAT, 1, &data);
hw->nvm.ops.read(hw, NVM_COMPAT, 1, &eeprom_data);