Fix issues when AES support was added for the STM32L1. From Juha Niskanen

include/nuttx/crypto/crypto.h

@@ -79,6 +79,8 @@ extern "C"
  * Public Function Prototypes
  ************************************************************************************/
 
+int up_cryptoinitialize(void);
+
 #if defined(CONFIG_CRYPTO_AES)
 int up_aesinitialize(void);
 int aes_cypher(FAR void *out, FAR const void *in, uint32_t size, FAR const void *iv,