wx_ethtool.c:undefined reference to `phylink_ethtool_nway_reset'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   f850568efe3a7a9ec4df357cfad1f997f0058924
commit: a0008a3658a34a54e77f2568bdaa2626233b1459 net: wangxun: add ngbevf build
date:   4 months ago
config: um-randconfig-001-20251110 (https://download.01.org/0day-ci/archive/20251110/202511100619.YuRi6Tez-lkp@xxxxxxxxx/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251110/202511100619.YuRi6Tez-lkp@xxxxxxxxx/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202511100619.YuRi6Tez-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

   /usr/bin/ld: drivers/net/ethernet/wangxun/libwx/wx_ethtool.o: in function `wx_nway_reset':
>> wx_ethtool.c:(.text+0x7db): undefined reference to `phylink_ethtool_nway_reset'
   /usr/bin/ld: drivers/net/ethernet/wangxun/libwx/wx_ethtool.o: in function `wx_get_link_ksettings':
>> wx_ethtool.c:(.text+0x802): undefined reference to `phylink_ethtool_ksettings_get'
   /usr/bin/ld: drivers/net/ethernet/wangxun/libwx/wx_ethtool.o: in function `wx_set_link_ksettings':
>> wx_ethtool.c:(.text+0x82b): undefined reference to `phylink_ethtool_ksettings_set'
   /usr/bin/ld: drivers/net/ethernet/wangxun/libwx/wx_ethtool.o: in function `wx_set_pauseparam':
>> wx_ethtool.c:(.text+0x86b): undefined reference to `phylink_ethtool_set_pauseparam'
   /usr/bin/ld: drivers/net/ethernet/wangxun/libwx/wx_ethtool.o: in function `wx_get_pauseparam':
>> wx_ethtool.c:(.text+0xafb): undefined reference to `phylink_ethtool_get_pauseparam'
   collect2: error: ld returned 1 exit status

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