default or selected kernelversion does not have config value CONFIG_WESTBRIDGE_HAL_SELECTED.
Result is shown for kernelversion 5.6.18

CONFIG_WESTBRIDGE_HAL_SELECTED (not configurable)

configname: CONFIG_WESTBRIDGE_HAL_SELECTED

Linux Kernel Configuration
└─>Device Drivers
└─>Staging drivers
└─>WESTBRIDGE_HAL_SELECTED
In linux kernel since version 2.6.37 (release Date: 2011-01-04)