CONFIG_ARCH_ASPEED is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

Aspeed BMC architectures

modulename: irq-aspeed-vic.ko

configname: CONFIG_ARCH_ASPEED

Linux Kernel Configuration
└─>Aspeed BMC architectures
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Say Y here if you want to run your kernel on an ASpeed BMC SoC.

source code: