CONFIG_ETRAX_DS1302_RSTBIT is not available for thedefaultarchitecture x86.
Result is shown for architecture cris
default or selected kernelversion does not have config value CONFIG_ETRAX_DS1302_RSTBIT.
Result is shown for kernelversion 6.2.5

DS1302 RST bit number

configname: CONFIG_ETRAX_DS1302_RSTBIT

Linux Kernel Configuration
└─>DS1302 RST bit number
In linux kernel since version 2.6.12  
This is the bit number for the RST signal line of the DS1302 RTC on
the selected port. If you have selected the generic port then it
should be bit 27, otherwise your best bet is bit 5.