CONFIG_ETRAX_PA_BUTTON_BITMASK is not available for thedefaultarchitecture x86.
Result is shown for architecture cris
default or selected kernelversion does not have config value CONFIG_ETRAX_PA_BUTTON_BITMASK.
Result is shown for kernelversion 6.2.5

PA-buttons bitmask


Linux Kernel Configuration
└─>PA-buttons bitmask
In linux kernel since version 2.6.12  
This is a bitmask with information about what bits on PA that
are used for buttons.
Most products has a so called TEST button on PA1, if that's true
use 02 here.
Use 00 if there are no buttons on PA.
If the bitmask is <> 00 a button driver will be included in the gpio
driver. ETRAX general I/O support must be enabled.