feat: Add rfid feature and .gitignore file

cpu/br28/overlay_code.h

@@ -0,0 +1,30 @@
+
+#ifndef _OVERLAY_CODE_H_
+#define _OVERLAY_CODE_H_
+
+#include "typedef.h"
+
+enum {
+    OVERLAY_AEC = 0,
+    OVERLAY_WAV,
+    OVERLAY_APE,
+    OVERLAY_FLAC,
+    OVERLAY_M4A,
+    OVERLAY_AMR,
+    OVERLAY_DTS,
+    OVERLAY_FM,
+
+#ifdef CONFIG_MP3_WMA_LIB_SPECIAL
+    OVERLAY_MP3,
+    OVERLAY_WMA,
+#endif
+    OVERLAY_LC3,
+
+};
+
+void overlay_load_code(u32 type);
+void audio_overlay_load_code(u32 type);
+int audio_cvp_code_load(void);
+
+#endif
+