pull in decomp updates for z_play (#4522)

soh/include/attributes.h

@@ -0,0 +1,12 @@
+#ifndef ATTRIBUTES_H
+#define ATTRIBUTES_H
+
+#if !defined(__GNUC__) && !defined(__attribute__)
+#define __attribute__(x)
+#endif
+
+#define UNUSED      __attribute__((unused))
+#define FALLTHROUGH __attribute__((fallthrough))
+#define NORETURN    __attribute__((noreturn))
+
+#endif