* NuttX supports ESP32-P4 >= v3.0 by default.
* In order to run on older chips configuration tuning is required.
* Without configutation tune boot loop happens on older chips.
* Added note on WaveShare ESP32-P4-Nano board that is almost identical
to existing ESP32-P4-Function-EV-Board board, so configs are compatible,
but it has v1.3 chip, thus config tune is required as documented above.
* Added cross-file reference label to esp32p4-function-ev-board.
Signed-off-by: Tomasz 'CeDeROM' CEDRO <tomek@cedro.info>