chore(embed/core): add include guard to translations.h

[no changelog]

core/embed/lib/translations.h

@@ -1,3 +1,25 @@
+/*
+ * This file is part of the Trezor project, https://trezor.io/
+ *
+ * Copyright (c) SatoshiLabs
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef LIB_TRANSLATIONS_H
+#define LIB_TRANSLATIONS_H
+
 #include <stdbool.h>
 #include <stdint.h>
 
@@ -8,3 +30,5 @@ const uint8_t* translations_read(uint32_t* len, uint32_t offset);
 void translations_erase(void);
 
 uint32_t translations_area_bytesize(void);
+
+#endif  // LIB_TRANSLATIONS_H