修复ec version 换行问题

ec_version.c

@@ -104,9 +104,8 @@ static ssize_t fw_version_show(struct kobject *kobj, struct kobj_attribute *attr
         oem_ec_read_ram(2, i, &data[i]);
     }
     // This needs to be completed here, obtain the real version number
-    sprintf(buf, "%02x%02x%02x%02x\n", data[0], data[1], data[2], data[3]);
+    return sprintf(buf, "%02x%02x%02x%02x\n", data[0], data[1], data[2], data[3]);
 
-    return 8;
 }
 
 static ssize_t fw_version_store(struct kobject *kobj, struct kobj_attribute *attr,