Ensure that ECX keys pass EVP_PKEY_param_check()

RSA keys have no parameters and pass EVP_PKEY_param_check(). Previously,
ECX keys had no parammeters and failed EVP_PKEY_param_check(). We should
be consistent. It makes more sense to always pass, and therefore this
commit implements that behaviour.

Fixes #14482

Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/14485)
diff --git a/test/evp_extra_test.c b/test/evp_extra_test.c
index acba981..9317917 100644
--- a/test/evp_extra_test.c
+++ b/test/evp_extra_test.c
@@ -380,6 +380,21 @@
 static const unsigned char pExampleECParamDER[] = {
     0x06, 0x08, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x03, 0x01, 0x07
 };
+
+static const unsigned char kExampleED25519KeyDER[] = {
+    0x30, 0x2e, 0x02, 0x01, 0x00, 0x30, 0x05, 0x06, 0x03, 0x2b, 0x65, 0x70,
+    0x04, 0x22, 0x04, 0x20, 0xba, 0x7b, 0xba, 0x20, 0x1b, 0x02, 0x75, 0x3a,
+    0xe8, 0x88, 0xfe, 0x00, 0xcd, 0x8b, 0xc6, 0xf4, 0x5c, 0x47, 0x09, 0x46,
+    0x66, 0xe4, 0x72, 0x85, 0x25, 0x26, 0x5e, 0x12, 0x33, 0x48, 0xf6, 0x50
+};
+
+static const unsigned char kExampleED25519PubKeyDER[] = {
+    0x30, 0x2a, 0x30, 0x05, 0x06, 0x03, 0x2b, 0x65, 0x70, 0x03, 0x21, 0x00,
+    0xf5, 0xc5, 0xeb, 0x52, 0x3e, 0x7d, 0x07, 0x86, 0xb2, 0x55, 0x07, 0x45,
+    0xef, 0x5b, 0x7c, 0x20, 0xe8, 0x66, 0x28, 0x30, 0x3c, 0x8a, 0x82, 0x40,
+    0x97, 0xa3, 0x08, 0xdc, 0x65, 0x80, 0x39, 0x29
+};
+
 #endif
 
 typedef struct APK_DATA_st {
@@ -402,14 +417,21 @@
 };
 
 static APK_DATA keycheckdata[] = {
-    {kExampleRSAKeyDER, sizeof(kExampleRSAKeyDER), "RSA", EVP_PKEY_RSA, 1, 1, 1, 0},
+    {kExampleRSAKeyDER, sizeof(kExampleRSAKeyDER), "RSA", EVP_PKEY_RSA, 1, 1, 1,
+     0},
     {kExampleBadRSAKeyDER, sizeof(kExampleBadRSAKeyDER), "RSA", EVP_PKEY_RSA,
      0, 1, 1, 0},
 #ifndef OPENSSL_NO_EC
     {kExampleECKeyDER, sizeof(kExampleECKeyDER), "EC", EVP_PKEY_EC, 1, 1, 1, 0},
     /* group is also associated in our pub key */
-    {kExampleECPubKeyDER, sizeof(kExampleECPubKeyDER), "EC", EVP_PKEY_EC, 0, 1, 1, 1},
-    {pExampleECParamDER, sizeof(pExampleECParamDER), "EC", EVP_PKEY_EC, 0, 0, 1, 2}
+    {kExampleECPubKeyDER, sizeof(kExampleECPubKeyDER), "EC", EVP_PKEY_EC, 0, 1,
+     1, 1},
+    {pExampleECParamDER, sizeof(pExampleECParamDER), "EC", EVP_PKEY_EC, 0, 0, 1,
+     2},
+    {kExampleED25519KeyDER, sizeof(kExampleED25519KeyDER), "ED25519",
+     EVP_PKEY_ED25519, 1, 1, 1, 0},
+    {kExampleED25519PubKeyDER, sizeof(kExampleED25519PubKeyDER), "ED25519",
+     EVP_PKEY_ED25519, 0, 1, 1, 1},
 #endif
 };