default or selected kernelversion does not have config value CONFIG_FEC_PTP.
Result is shown for kernelversion 5.17.13

PTP Hardware Clock (PHC)

modulename: fec_ptp.ko

configname: CONFIG_FEC_PTP

Linux Kernel Configuration
└─>Device Drivers
└─>Network device support
└─>Ethernet driver support
└─>PTP Hardware Clock (PHC)
In linux kernel since version 3.8 (release Date: 2013-02-18)  
Say Y here if you want to use PTP Hardware Clock (PHC) in the
driver. Only the basic clock operations have been implemented.

source code: