perf symbols: Remove include map.h from dso.h

Disentangling the dependency tree, to reduce build time.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-n2gcrfmh480rm44p7fra13vv@git.kernel.org


Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>