CONFIG_ARCH_ZX is not available for the default architecture x86.
Result is shown for architecture arm
default or selected kernelversion does not have config value CONFIG_ARCH_ZX.
Result is shown for kernelversion 6.0-rc6

ZTE ZX family

modulename: clk-zx296718.ko
configname: CONFIG_ARCH_ZX

Linux Kernel Configuration
└─> ZTE ZX family

Support for ZTE ZX-based family of processors. TV
set-top-box processor is supported. More will be
added soon.

source code: