perf symbols: Use symbol type instead of map->type

perf symbols: Use symbol type instead of map->type

map->type is going away, we can derive it from map->prot, so use
the same logic as in the kernel's arch/arm/kernel/module.c file:

  ELF32_ST_TYPE(sym->st_info) == STT_FUNC && !(sym->st_value & 1))

This was introduced in b2f8fb237e9c ("perf symbols: Fix annotation of
thumb code"), that fix is maintained with this change.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Dave Martin <dave.martin@linaro.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Dr. David Alan Gilbert <david.gilbert@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-us590h81uqgxaumucfttqj50@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>