CONFIG_SOC_IMX7D_CA7 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

CONFIG_SOC_IMX7D_CA7 (not configurable)

modulename: mach-imx7d.ko

configname: CONFIG_SOC_IMX7D_CA7

Linux Kernel Configuration
└─>Freescale i.MX family
└─>SOC_IMX7D_CA7
In linux kernel since version 3.10 (release Date: 2013-06-30)  
source code:
arch/arm/mach-imx/mach-imx7d.c


is depended by
CONFIG_SOC_IMX7ULP