Rename EVP_PKEY_new_private_key()/EVP_PKEY_new_public_key()

Renamed to EVP_PKEY_new_raw_private_key()/EVP_new_raw_public_key() as per
feedback.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5520)
diff --git a/ssl/statem/extensions_srvr.c b/ssl/statem/extensions_srvr.c
index 0f997c4..7c9a3f7 100644
--- a/ssl/statem/extensions_srvr.c
+++ b/ssl/statem/extensions_srvr.c
@@ -752,9 +752,10 @@
 
     /* Verify the HMAC of the cookie */
     hctx = EVP_MD_CTX_create();
-    pkey = EVP_PKEY_new_private_key(EVP_PKEY_HMAC, NULL,
-                                    s->session_ctx->ext.cookie_hmac_key,
-                                    sizeof(s->session_ctx->ext.cookie_hmac_key));
+    pkey = EVP_PKEY_new_raw_private_key(EVP_PKEY_HMAC, NULL,
+                                        s->session_ctx->ext.cookie_hmac_key,
+                                        sizeof(s->session_ctx->ext
+                                               .cookie_hmac_key));
     if (hctx == NULL || pkey == NULL) {
         EVP_MD_CTX_free(hctx);
         EVP_PKEY_free(pkey);
@@ -1762,9 +1763,10 @@
 
     /* HMAC the cookie */
     hctx = EVP_MD_CTX_create();
-    pkey = EVP_PKEY_new_private_key(EVP_PKEY_HMAC, NULL,
-                                    s->session_ctx->ext.cookie_hmac_key,
-                                    sizeof(s->session_ctx->ext.cookie_hmac_key));
+    pkey = EVP_PKEY_new_raw_private_key(EVP_PKEY_HMAC, NULL,
+                                        s->session_ctx->ext.cookie_hmac_key,
+                                        sizeof(s->session_ctx->ext
+                                               .cookie_hmac_key));
     if (hctx == NULL || pkey == NULL) {
         SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_STOC_COOKIE,
                  ERR_R_MALLOC_FAILURE);