Cherry-pick crypto/internal.h changes from 1e469e45a4

Change-Id: Ic81fe8fbccf43e9f490e3ed50aa5b7516598cd89

crypto/internal.h

diff --git a/crypto/internal.h b/crypto/internal.h
index c9b5e8e..2e94399 100644
--- a/crypto/internal.h
+++ b/crypto/internal.h
@@ -881,6 +881,16 @@
   OPENSSL_memcpy(out, &v, sizeof(v));
 }
 
+static inline uint64_t CRYPTO_load_u64_le(const void *in) {
+  uint64_t v;
+  OPENSSL_memcpy(&v, in, sizeof(v));
+  return v;
+}
+
+static inline void CRYPTO_store_u64_le(void *out, uint64_t v) {
+  OPENSSL_memcpy(out, &v, sizeof(v));
+}
+
 static inline uint64_t CRYPTO_load_u64_be(const void *ptr) {
   uint64_t ret;
   OPENSSL_memcpy(&ret, ptr, sizeof(ret));