CONFIG_ARCH_IQ80321 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

Enable support for IQ80321

modulename: iq80321.ko

configname: CONFIG_ARCH_IQ80321

Linux Kernel Configuration
└─>IOP32x Implementation Options
└─>Enable support for IQ80321
In linux kernel since version 2.6.12  
Say Y here if you want to run your kernel on the Intel IQ80321
evaluation kit for the IOP321 processor.

source code:
arch/arm/mach-iop32x/iq80321.c