refactor(esp_system): ind_wdt.c refactor & code clean

1. introduce reconfigure_ticks function for wdt configuration
 2. move esp32eco3 cache livelock workaround code out from int_wdt.c

components/esp_system/include/esp_private/esp_int_wdt.h

@@ -1,15 +1,23 @@
 /*
- * SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2015-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
 
 #pragma once
 
+#include "sdkconfig.h"
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+#define IWDT_INITIAL_TIMEOUT_S  (5)
+#define IWDT_TICKS_PER_US       (500)
+#define IWDT_STAGE0_TIMEOUT_US  (CONFIG_ESP_INT_WDT_TIMEOUT_MS * 1000 / IWDT_TICKS_PER_US)
+#define IWDT_STAGE1_TIMEOUT_US  (2 * IWDT_STAGE0_TIMEOUT_US)
+#define IWDT_INITIAL_TIMEOUT_US (IWDT_INITIAL_TIMEOUT_S * 1000000 / IWDT_TICKS_PER_US)
+
 /**
  * @brief Initialize the non-CPU-specific parts of interrupt watchdog.
  *
@@ -28,6 +36,18 @@ void esp_int_wdt_init(void);
  */
 void esp_int_wdt_cpu_init(void);
 
+#if CONFIG_ESP32_ECO3_CACHE_LOCK_FIX
+/**
+ * @brief Reconfigure WDT stage timeouts (ticks).
+ *
+ * Low-level API used by the livelock workaround. Prefer esp_int_wdt_livelock_workaround() for sleep flows.
+ *
+ * @param stage0_ticks Stage0 timeout ticks
+ * @param stage1_ticks Stage1 timeout ticks
+ */
+void esp_int_wdt_reconfigure_ticks(uint32_t stage0_ticks, uint32_t stage1_ticks);
+#endif
+
 #ifdef __cplusplus
 }
 #endif