espressif: Add ESP32-S2 initial basic support

ESP32S2 target added to the Espressif port, modified CMakeLists,
and added the bootloader related files to esp32s2 target directory.

Signed-off-by: Almir Okato <almir.okato@espressif.com>
diff --git a/boot/espressif/port/esp_loader.c b/boot/espressif/port/esp_loader.c
index 878dd55..932f2c0 100644
--- a/boot/espressif/port/esp_loader.c
+++ b/boot/espressif/port/esp_loader.c
@@ -11,14 +11,14 @@
 #include <bootloader_flash.h>
 #include <bootloader_flash_priv.h>
 
-#include "esp32/rom/cache.h"
-#include "esp32/rom/efuse.h"
-#include "esp32/rom/ets_sys.h"
-#include "esp32/rom/spi_flash.h"
-#include "esp32/rom/crc.h"
-#include "esp32/rom/rtc.h"
-#include "esp32/rom/gpio.h"
-#include "esp32/rom/uart.h"
+#include "rom/cache.h"
+#include "rom/efuse.h"
+#include "rom/ets_sys.h"
+#include "rom/spi_flash.h"
+#include "rom/crc.h"
+#include "rom/rtc.h"
+#include "rom/gpio.h"
+#include "rom/uart.h"
 
 #include <esp_loader.h>
 #include <bootutil/fault_injection_hardening.h>