Replace sdkconfig with device.properties (#411)

Boards/m5stack-core2/README.md

@@ -1,9 +0,0 @@
-# M5Stack Core2
-
-This board implementation concerns the original Core2 hardware and **not** the v1.1 variant.
-
-Reference implementations:
-- [ESP-BSP](https://github.com/espressif/esp-bsp/tree/master/bsp/m5stack_core_2)
-
-Docs:
-- [M5Stack.com](https://docs.m5stack.com/en/core/Core2)

Boards/m5stack-core2/device.properties

@@ -0,0 +1,22 @@
+[general]
+vendor=M5Stack
+name=Core2
+
+[hardware]
+target=ESP32
+flashSize=16MB
+spiRam=true
+spiRamMode=QUAD
+spiRamSpeed=80M
+esptoolFlashFreq=80M
+
+[display]
+size=2"
+shape=rectangle
+dpi=200
+
+[cdn]
+warningMessage=This board implementation concerns the original Core2 hardware and **not** the v1.1 variant
+
+[lvgl]
+colorDepth=16