Preparation for fixes

[KrishnaIyer]

ToDo:

• [x] Check if newer WiFi stack is available for harmony 1.x.
• [x] Check feasibility of including microchip's bug-fixes to the gateway stack.
• [x] Create a short description of the proposed LoRa fix.

[KrishnaIyer]

Proposed change (Copied from Slack):

• initializing uart at boot
• keep lora power off
• deinitialize uart
• wait
• lora power on
• initialize uart (modifié) The deinitializing of the UART is needed to now power the LoRa module via the UART RX/TX lines