default or selected kernelversion does not have config value CONFIG_CPMAC.
Result is shown for kernelversion 6.9.9

TI AR7 CPMAC Ethernet support

modulename: cpmac.ko

configname: CONFIG_CPMAC

Linux Kernel Configuration
└─>Device Drivers
└─>Network device support
└─>Ethernet driver support
└─>TI AR7 CPMAC Ethernet support
In linux kernel since version 2.6.24 (release Date: 2008-01-24)  
TI AR7 CPMAC Ethernet support

source code:
drivers/net/ethernet/ti/cpmac.c
selects
CONFIG_PHYLIB