keymgr: bugfix: recognize textual representation of ED448 algorithm

src/utils/keymgr/functions.c

@@ -124,6 +124,7 @@ static bool genkeyargs(int argc, char *argv[], bool just_timing,
 	algnames[DNSSEC_KEY_ALGORITHM_ECDSA_P256_SHA256] = "ecdsap256sha256";
 	algnames[DNSSEC_KEY_ALGORITHM_ECDSA_P384_SHA384] = "ecdsap384sha384";
 	algnames[DNSSEC_KEY_ALGORITHM_ED25519] = "ed25519";
+	algnames[DNSSEC_KEY_ALGORITHM_ED448] = "ed448";
 
 	// parse args
 	for (int i = 0; i < argc; i++) {