CONFIG_ETRAX_DEF_R_WAITSTATES 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_WAITSTATES.
Result is shown for kernelversion 6.7-rc3

R_WAITSTATES

configname: CONFIG_ETRAX_DEF_R_WAITSTATES

Linux Kernel Configuration
└─>CRIS v10 options
└─>R_WAITSTATES
In linux kernel since version 2.6.12  
Waitstates for SRAM, Flash and peripherals (not DRAM). 95f8 is a
good choice for most Axis products...