boot: zephyr: Add ESP32C2/ESP8684 support

Adds MCUboot support to ESP32C2/ESP8684 devices.

Signed-off-by: Raffael Rostagno <raffael.rostagno@espressif.com>

boot/zephyr/socs/esp32c2.conf

@@ -0,0 +1,20 @@
+# SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
+# SPDX-License-Identifier: Apache-2.0
+
+CONFIG_BOOT_MAX_IMG_SECTORS=512
+CONFIG_BOOT_UPGRADE_ONLY=y
+CONFIG_BOOT_VALIDATE_SLOT0=n
+CONFIG_BOOT_SIGNATURE_TYPE_NONE=y
+CONFIG_BOOT_BANNER=n
+
+CONFIG_UART_CONSOLE=n
+CONFIG_CONSOLE=n
+CONFIG_SERIAL=n
+
+CONFIG_MCUBOOT_LOG_LEVEL_OFF=y
+CONFIG_LOG_DEFAULT_LEVEL=0
+CONFIG_DEBUG=n
+
+CONFIG_XIP=n
+CONFIG_HEAP_MEM_POOL_SIZE=4096
+CONFIG_MINIMAL_LIBC=y