trace: Replace demangle.h with internal defines

It looks like the demangle.h from binutils-dev is not installed that
commonly anymore. Since we need only two defines from that file, replace
the header file with those defines to make it easier to build with
WPA_TRACE_BFD=y.

Signed-off-by: Jouni Malinen <j@w1.fi>

src/utils/trace.c

@@ -18,11 +18,9 @@ static struct dl_list active_references =
 
 #ifdef WPA_TRACE_BFD
 #include <bfd.h>
-#ifdef __linux__
-#include <demangle.h>
-#else /* __linux__ */
-#include <libiberty/demangle.h>
-#endif /* __linux__ */
+
+#define DMGL_PARAMS      (1 << 0)
+#define DMGL_ANSI        (1 << 1)
 
 static char *prg_fname = NULL;
 static bfd *cached_abfd = NULL;