tools: Move code originally from asm-generic/atomic.h into tools/include/asm-generic/

To match the Linux kernel source code structure from where this code came from.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-1ldjhvioch1uczilno5e1epl@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/MANIFEST b/tools/perf/MANIFEST
index db7827f..67d48e20 100644
--- a/tools/perf/MANIFEST
+++ b/tools/perf/MANIFEST
@@ -5,6 +5,7 @@
 tools/lib/symbol/kallsyms.c
 tools/lib/symbol/kallsyms.h
 tools/include/asm/bug.h
+tools/include/asm-generic/bitops/atomic.h
 tools/include/asm-generic/bitops/__ffs.h
 tools/include/linux/compiler.h
 tools/include/linux/export.h