perf cpu_map: Rename struct cpu_map to struct perf_cpu_map

Rename struct cpu_map to struct perf_cpu_map, so it could be part of
libperf.

Committer notes:

Added fixes for arm64, provided by Jiri.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190721112506.12306-3-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/env.h b/tools/perf/util/env.h
index d5d9865..d8e083d 100644
--- a/tools/perf/util/env.h
+++ b/tools/perf/util/env.h
@@ -27,7 +27,7 @@ struct numa_node {
 	u32		 node;
 	u64		 mem_total;
 	u64		 mem_free;
-	struct cpu_map	*map;
+	struct perf_cpu_map	*map;
 };
 
 struct memory_node {