eina - enable EINA_PRINTF for clang as well as gcc

src/lib/eina/eina_types.h

@@ -224,6 +224,7 @@
 #  define EINA_LIKELY(exp)      __builtin_expect((exp), 1)
 #  define EINA_SENTINEL __attribute__((__sentinel__))
 #  ifndef __clang__
+#   define EINA_PRINTF(fmt, arg) __attribute__((__format__ (__printf__, fmt, arg)))
 #   if __GNUC__ >= 7
 #    define EINA_FALLTHROUGH __attribute__ ((fallthrough));
 #   else