Add no-op functions |CRYPTO_malloc_init| and |ENGINE_load_builtin_engines|.

This reduces the impact on Netty. See
https://github.com/Scottmitch/netty-tcnative/commit/904b84ce41fc44dd1d3955df69912d91906c9877#commitcomment-12159877

Change-Id: I22f9e1edaeb9e721326867ae2b4f3da2c5441437
Reviewed-on: https://boringssl-review.googlesource.com/5535
Reviewed-by: Adam Langley <alangley@gmail.com>
diff --git a/crypto/crypto.c b/crypto/crypto.c
index 26fbd70..d70c8c7 100644
--- a/crypto/crypto.c
+++ b/crypto/crypto.c
@@ -130,3 +130,9 @@
 unsigned long SSLeay(void) {
   return OPENSSL_VERSION_NUMBER;
 }
+
+int CRYPTO_malloc_init(void) {
+  return 1;
+}
+
+void ENGINE_load_builtin_engines(void) {}