CONFIG_ARCH_MX1ADS is not available for the default architecture x86.
Result is shown for architecture arm
default or selected kernelversion does not have config value CONFIG_ARCH_MX1ADS.
Result is shown for kernelversion 5.9.9

MX1ADS platform

modulename: mach-mx1ads.ko
configname: CONFIG_ARCH_MX1ADS

Linux Kernel Configuration
└─> Freescale i.MX support
└─> MX1ADS platform

Say Y here if you are using Motorola MX1ADS/MXLADS boards

source code: