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

Intel EG20T PCH CAN controller

modulename: pch_can.ko

configname: CONFIG_PCH_CAN

Linux Kernel Configuration
└─>Device Drivers
└─>Network device support
└─>CAN Device Drivers
└─>PCI support
└─>Intel EG20T PCH CAN controller
In linux kernel since version 2.6.37 (release Date: 2011-01-04)  
This driver is for PCH CAN of Topcliff (Intel EG20T PCH) which
is an IOH for x86 embedded processor (Intel Atom E6xx series).
This driver can access CAN bus.

source code:
drivers/net/can/pch_can.c