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

R_PORT_PB_CONFIG

configname: CONFIG_ETRAX_DEF_R_PORT_PB_CONFIG

Linux Kernel Configuration
└─>CRIS v10 options
└─>R_PORT_PB_CONFIG
In linux kernel since version 2.6.12  
Configures the type of the general port B bits. 1 is chip select,
0 is port. Most products should use 00 here.