Add support for KERN_ARND to get random bytes on NetBSD
Add support for KERN_ARND to get random bytes on NetBSD

Reviewed-by: Andy Polyakov <015edf36635e030d5e009e08808a59984e629740@openssl.org>
GH: #6405

openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl