CONFIG_ARCH_ZX is not available for thedefaultarchitecture x86.
Result is shown for architecture arm64
ZTE ZX SoC Family
modulename: clk-zx296718.ko
configname: CONFIG_ARCH_ZX
Linux Kernel Configuration
└─>Platform selection
└─>ZTE ZX SoC Family
In linux kernel since version 4.1 (release Date: 2015-06-21)
This enables support for ZTE ZX SoC Family