Watchdog cleanup (#15283)

Marlin/src/HAL/HAL_STM32_F4_F7/watchdog.cpp

@@ -44,7 +44,7 @@
     }
   }
 
-  void watchdog_reset() {
+  void HAL_watchdog_refresh() {
     /* Refresh IWDG: reload counter */
     if (HAL_IWDG_Refresh(&hiwdg) != HAL_OK) {
       /* Refresh Error */

Marlin/src/HAL/HAL_STM32_F4_F7/watchdog.h

@@ -24,4 +24,4 @@
 extern IWDG_HandleTypeDef hiwdg;
 
 void watchdog_init();
-void watchdog_reset();
+void HAL_watchdog_refresh();