CONFIG_PLAT_USRV is not available for thedefaultarchitecture x86.
Result is shown for architecture m32r
default or selected kernelversion does not have config value CONFIG_PLAT_USRV.
Result is shown for kernelversion 6.7-rc3

uServer

configname: CONFIG_PLAT_USRV

Platform Type
└─>uServer
In linux kernel since version 2.6.12