rollback to platform espressif 1.8.0

src/lmic_config.h

@@ -88,7 +88,7 @@
 // implementation is optimized for speed on 32-bit processors using
 // fairly big lookup tables, but it takes up big amounts of flash on the
 // AVR architecture.
-#define USE_ORIGINAL_AES
+//#define USE_ORIGINAL_AES
 //
 // This selects the AES implementation written by Ideetroon for their
 // own LoRaWAN library. It also uses lookup tables, but smaller