dosfs: Add sync_device option for msdos_format()

cpukit/libfs/src/dosfs/dosfs.h

@@ -94,6 +94,11 @@ typedef struct {
    */
   bool skip_alignment;
 
+  /**
+   * @brief Synchronize device after write operations.
+   */
+  bool sync_device;
+
   /**
    * @brief The amount of info to output.
    */

cpukit/libfs/src/dosfs/msdos_format.c

@@ -1251,6 +1251,11 @@ int msdos_format
          tmp_sec);
     }
   }
+
+  if (ret_val == 0 && rqdata != NULL && rqdata->sync_device) {
+    ret_val = rtems_disk_fd_sync(fd);
+  }
+
   /*
    * cleanup:
    * sync and unlock disk