missing module config in rak6421 / 13300 + 13302 module config files.

[Littleaton]

13302 and 13300 had missing module config for slot 2, also the rf switch and voltage info was missing.

Without that the auto setting in the config.yaml will try to use the default lora-hat-rak-6421-pi-hat.yaml and things do not work correctly.

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• I have tested that my proposed changes behave as described.
• I have tested that my proposed changes do not cause any obvious regressions on the following devices:
  • Heltec (Lora32) V3
  • LilyGo T-Deck
  • LilyGo T-Beam
  • RAK WisBlock 4631
  • RAK WisBlock 6421 Pi Hat
  • Seeed Studio T-1000E tracker card
  • Other (please specify below)
  • Raspberry pi 4b

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