CONFIG_RTAS_ERROR_LOGGING is not available for thedefaultarchitecture x86.
Result is shown for architecture powerpc

CONFIG_RTAS_ERROR_LOGGING (not configurable)

configname: CONFIG_RTAS_ERROR_LOGGING

Linux Kernel Configuration
└─>Platform support
└─>RTAS_ERROR_LOGGING
In linux kernel since version 2.6.15 (release Date: 2006-01-02)