set_ecdh_privkey
err = set_ecdh_privkey(tfm, NULL);
int set_ecdh_privkey(struct crypto_kpp *tfm, const u8 private_key[32]);
ret = set_ecdh_privkey(tfm, priv_a);
ret = set_ecdh_privkey(tfm, priv_b);
if (set_ecdh_privkey(smp->tfm_ecdh, debug_sk))
err = set_ecdh_privkey(tfm_ecdh, debug_sk);
err = set_ecdh_privkey(smp->tfm_ecdh, debug_sk);