doc: edac: Separate Optional and Mandatory APIs

Make documentation more readable by separating API with help of @name
instead of simple comment in the code.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>

include/zephyr/drivers/edac.h

@@ -74,7 +74,12 @@ __subsystem struct edac_driver_api {
  * INTERNAL_HIDDEN @endcond
  */
 
-/* Optional interfaces */
+/**
+ * @name Optional interfaces
+ * @{
+ *
+ * EDAC Optional Interfaces
+ */
 
 /**
  * @brief Set injection parameter param1
@@ -241,7 +246,14 @@ static inline int edac_inject_error_trigger(const struct device *dev)
 	return api->inject_error_trigger(dev);
 }
 
-/* Mandatory interfaces */
+/** @} */ /* End of EDAC Optional Interfaces */
+
+/**
+ * @name Mandatory interfaces
+ * @{
+ *
+ * EDAC Mandatory Interfaces
+ */
 
 /**
  * @brief Get ECC Error Log
@@ -398,8 +410,9 @@ static inline int edac_notify_callback_set(const struct device *dev,
 	return api->notify_cb_set(dev, cb);
 }
 
-/**
- * @}
- */
+
+/** @} */ /* End of EDAC Mandatory Interfaces */
+
+/** @} */ /* End of EDAC API */
 
 #endif  /* ZEPHYR_INCLUDE_DRIVERS_EDAC_H_ */