CONFIG_ARCH_IMX_V6_V7 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

i.MX3, i.MX5, i.MX6

configname: CONFIG_ARCH_IMX_V6_V7

Freescale CPU family:
└─>i.MX3, i.MX5, i.MX6
In linux kernel since version 3.3 (release Date: 2012-03-18)  
This enables support for systems based on the Freescale i.MX3, i.MX5
and i.MX6 family.