perf branch: Remove some needless headers, add a needed one

map_symbol.h is needed because we have structs that contains 'struct
addr_map_symbol', so add it, remove the others.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/branch.h

@@ -7,11 +7,9 @@
  * detected in at least musl libc, used in Alpine Linux. -acme
  */
 #include <stdio.h>
-#include <stdint.h>
-#include <linux/compiler.h>
-#include <linux/stddef.h>
 #include <linux/perf_event.h>
 #include <linux/types.h>
+#include "util/map_symbol.h"
 #include "event.h"
 
 struct branch_flags {