Add vendor prefix for esp_wroom_02

Resolves #266

Author: valeros

boards/esp_wroom_02.json

@@ -19,7 +19,7 @@
     "esp8266-rtos-sdk",
     "esp8266-nonos-sdk"
   ],
-  "name": "ESP-WROOM-02",
+  "name": "Espressif ESP-WROOM-02",
   "upload": {
     "maximum_ram_size": 81920,
     "maximum_size": 2097152,