CONFIG_PPC_MPC836x is not available for thedefaultarchitecture x86.
Result is shown for architecture powerpc
default or selected kernelversion does not have config value CONFIG_PPC_MPC836x.
Result is shown for kernelversion 5.15.113

CONFIG_PPC_MPC836x (not configurable)

configname: CONFIG_PPC_MPC836x

Linux Kernel Configuration
└─>Platform support
└─>PPC_MPC836x
In linux kernel since version 2.6.19 (release Date: 2006-11-29)