Make wc_PemToDer|wc_DerToPemEx depend only on ASN not KEYGEN

These functions are actually not tied to the KEYGEN feature.

Author: mjdemilliano

scripts/build_ffi.py

@@ -957,6 +957,11 @@ def build_ffi(local_wolfssl, features):
 
         word32 wc_EncodeSignature(byte* out, const byte* digest, word32 digSz,
                                   int hashOID);
+        int wc_PemToDer(const unsigned char* buff, long longSz, int type,
+                        DerBuffer** pDer, void* heap, EncryptedInfo* info,
+                        int* keyFormat);
+        int wc_DerToPemEx(const byte* der, word32 derSz, byte* output, word32 outSz,
+                        byte *cipher_info, int type);
         """
 
     if features["ASN"] or features["RSA"]:
@@ -965,15 +970,6 @@ def build_ffi(local_wolfssl, features):
         int wc_GetPkcs8TraditionalOffset(byte* input, word32* inOutIdx, word32 sz);
         """
 
-    if features["KEYGEN"]:
-        cdef += """
-        int wc_PemToDer(const unsigned char* buff, long longSz, int type,
-                        DerBuffer** pDer, void* heap, EncryptedInfo* info,
-                        int* keyFormat);
-        int wc_DerToPemEx(const byte* der, word32 derSz, byte* output, word32 outSz,
-                          byte *cipher_info, int type);
-        """
-
     if features["WC_RNG_SEED_CB"]:
         cdef += """
         typedef int (*wc_RngSeed_Cb)(OS_Seed* os, byte* seed, word32 sz);