Palawan DVT

Palawan DVT represents a complete redesign. The main MCU has changed, and we now use a SoM for the radio.

Palawan Rx ECOs

*ECO1*: The LED is backwards, and should be flipped around.
*ECO2*: RFM69HW DIO0 is connected to a pin that cannot generate an interrupt. Move DIO0 to PTA12.
*ECO3*: There is a ground (and power) plane directly under the RFM69HW. This should be pulled back.
*EC04*: The LP3982 footprint has no "Pin 1" marker. Add a Pin 1 marker.
*ECO5*: The KL02 footprint has a non-obvious "Pin 1" marker. Make it clearer.

*ECO1*: There is a stray via on the board. Run DRC prior to exporting to gerbers to repour copper.
*ECO2*: RFM69HW DIO0 is connected to a pin that cannot generate an interrupt. Move DIO0 to PTA12.
*ECO3*: The KL02 footprint has a non-obvious "Pin 1" marker. Make it clearer.