boot: zephyr: esp32: zephyr port

Add support for ESP32xx targets to build
as Zephyr application.

Signed-off-by: Marek Matej <marek.matej@espressif.com>
diff --git a/boot/espressif/port/esp_loader.c b/boot/espressif/port/esp_loader.c
index 4978df6..abb9fdc 100644
--- a/boot/espressif/port/esp_loader.c
+++ b/boot/espressif/port/esp_loader.c
@@ -72,7 +72,7 @@
         FIH_PANIC;
     }
 
-    if (!esp_ptr_in_dram((void *)load_header.dram_dest_addr) || !esp_ptr_in_dram((void *)load_header.dram_dest_addr + load_header.dram_size)) {
+    if (!esp_ptr_in_dram((void *)load_header.dram_dest_addr) || !esp_ptr_in_dram((void *)(load_header.dram_dest_addr + load_header.dram_size))) {
         BOOT_LOG_ERR("DRAM region in load header is not valid. Aborting");
         FIH_PANIC;
     }