CONFIG_ETRAX_CARDBUS is not available for thedefaultarchitecture x86.
Result is shown for architecture cris
Cardbus support
modulename: bios.ko
configname: CONFIG_ETRAX_CARDBUS
Linux Kernel Configuration
└─>Cardbus support
In linux kernel since version 2.6.13 (release Date: 2005-08-28)
Enabled the ETRAX Cardbus driver.