default or selected kernelversion does not have config value CONFIG_DEV_DAX_PMEM_COMPAT.
Result is shown for kernelversion 6.7-rc4

PMEM DAX: support the deprecated /sys/class/dax interface

modulename: dax_pmem_compat.ko

configname: CONFIG_DEV_DAX_PMEM_COMPAT

Linux Kernel Configuration
└─>Device Drivers
└─>DAX: direct access to differentiated memory
└─>PMEM DAX: support the deprecated /sys/class/dax interface
In linux kernel since version 5.1 (release Date: 2019-05-05)  
Older versions of the libdaxctl library expect to find all
device-dax instances under /sys/class/dax. If libdaxctl in
your distribution is older than v58 say M, otherwise say N.

source code:
depends
CONFIG_DAX
CONFIG_DEV_DAX_PMEM
CONFIG_MODULES