CONFIG_ARCH_IMX_V4_V5 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

i.MX1, i.MX21, i.MX25, i.MX27

configname: CONFIG_ARCH_IMX_V4_V5

Freescale CPU family:
└─>i.MX1, i.MX21, i.MX25, i.MX27
In linux kernel since version 3.3 (release Date: 2012-03-18)  
This enables support for systems based on the Freescale i.MX ARMv4
and ARMv5 SoCs