CONFIG_CRYPTO_CHACHA20_NEON is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

NEON accelerated ChaCha20 symmetric cipher

modulename: chacha20-neon.ko

and/or

chacha-neon.ko

configname: CONFIG_CRYPTO_CHACHA20_NEON

Linux Kernel Configuration
└─>ARM Accelerated Cryptographic Algorithms
└─>NEON accelerated ChaCha20 symmetric cipher
In linux kernel since version 3.10 (release Date: 2013-06-30)  
source code:
/arch/arm/crypto/


is depended by
CONFIG_WIREGUARD