CONFIG_ALPHA_TITAN is not available for the selected architecture x86.
Result is shown for architecture alpha

Titan

modulename: core_titan.ko

and/or

sys_titan.ko

and/or

err_ev6.ko

configname: CONFIG_ALPHA_TITAN

Alpha system type
└─>Titan
In linux kernel since version 2.6.12 )
AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
source code:
arch/alpha/kernel/core_titan.c