Update NRF52 build to work again

docs/software/nrf52-TODO.md

@@ -5,8 +5,11 @@
 RAM investigation.
 nRF52832-QFAA 64KB ram, 512KB flash vs
 nrf52832-QFAB 32KB ram, 512kb flash
+nrf52833 128KB RAM
 nrf52840 256KB RAM, 1MB flash
 
+Manual hacks needed to build (for now):
+
 platform.json
 
     "framework-arduinoadafruitnrf52": {
@@ -15,6 +18,8 @@ platform.json
       "version": "https://github.com/meshtastic/Adafruit_nRF52_Arduino.git"
     },
 
+kevinh@kevin-server:~/.platformio/packages/framework-arduinoadafruitnrf52/variants$ ln -s ~/development/meshtastic/meshtastic-esp32/variants/* .
+
 ## Initial work items
 
 Minimum items needed to make sure hardware is good.