Flash / RAM size mixup in board definition

[maxgerhardt]

PlatformIO declares

platform-espressif32/boards/m5stack-fire.json

Lines 26 to 29 in e06d24c

	"upload": {
	"flash_size": "16MB",
	"maximum_ram_size": 6553600,
	"maximum_size": 16777216,

Aka, 6553600 of RAM and 16 MByte of FLASH

Yet Arduino-ESP32 declares

https://github.com/espressif/arduino-esp32/blob/5bb8177aa1feec665938be97607b526a4f0ec0bb/boards.txt#L4883-L4889

m5stack-fire.name=M5Stack-FIRE

m5stack-fire.upload.tool=esptool_py
m5stack-fire.upload.maximum_size=6553600
m5stack-fire.upload.maximum_data_size=4521984

aka 6553600 bytes of FLASH and 320kByte + 4MByte (PSRAM) = 4521984 RAM.

The Arduino IDE is correct, per https://docs.makerfactory.io/m5stack/core/fire/#parameter the board has an ESP32 with 4MByte PSRAM and a 16MByte flash chip. It does not have ~6.5 MBytes of RAM as PIO says.

There may be other boards affected by this mixup.