default or selected kernelversion does not have config value CONFIG_HW_RANDOM_HISI_V2.
Result is shown for kernelversion 6.9.8

HiSilicon True Random Number Generator V2 support

modulename: hisi-trng-v2.ko

configname: CONFIG_HW_RANDOM_HISI_V2

Linux Kernel Configuration
└─>Device Drivers
└─>Character devices
└─>Hardware Random Number Generator Core support
└─>HiSilicon True Random Number Generator V2 support
In linux kernel since version 5.1 (release Date: 2019-05-05)  
This driver provides kernel-side support for the True Random Number
Generator V2 hardware found on HiSilicon Hi1620 SoC.

To compile this driver as a module, choose M here: the
module will be called hisi-trng-v2.

If unsure, say Y.

source code: