CONFIG_ARCH_MX2 is not available for the selected architecture x86.
Result is shown for architecture arm
MX2-based
modulename: iomux-mx1-mx2.ko
configname: CONFIG_ARCH_MX2
Freescale CPU family:
└─>MX2-based
In linux kernel since version 2.6.27 (release Date: 2008-10-09)
This enables support for systems based on the Freescale i.MX2 family