esp32/boards: Add GENERIC_S2 board definition.

Signed-off-by: Damien George <damien@micropython.org>

ports/esp32/boards/GENERIC_S2/mpconfigboard.cmake

@@ -0,0 +1,8 @@
+set(IDF_TARGET esp32s2)
+
+set(SDKCONFIG_DEFAULTS
+    boards/sdkconfig.base
+    boards/sdkconfig.usb
+)
+
+set(MICROPY_FROZEN_MANIFEST ${MICROPY_PORT_DIR}/boards/manifest.py)

ports/esp32/boards/GENERIC_S2/mpconfigboard.h

@@ -0,0 +1,5 @@
+#define MICROPY_HW_BOARD_NAME               "ESP32S2 module"
+#define MICROPY_HW_MCU_NAME                 "ESP32S2"
+
+#define MICROPY_PY_BLUETOOTH                (0)
+#define MICROPY_HW_ENABLE_SDCARD            (0)