perf symbol: Move addr_location__put() from event.h

Its a addr_location method, so move it to symbol.h, where 'struct
addr_location' is, this way some places that were using event.h just to
get this prototype may stop doing so and speed up building and
disentanble the header dependency graph.

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