tools: Introduce tools/include/linux/time64.h for *SEC_PER_*SEC macros

And remove it from tools/perf/{perf,util}.h, making code that needs
these macros to include linux/time64.h instead, to match how this is
used in the kernel sources.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-e69fc1pvkgt57yvxqt6eunyg@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/perf.h

@@ -14,13 +14,6 @@ void test_attr__open(struct perf_event_attr *attr, pid_t pid, int cpu,
 #define HAVE_ATTR_TEST
 #include "perf-sys.h"
 
-#ifndef NSEC_PER_SEC
-# define NSEC_PER_SEC			1000000000ULL
-#endif
-#ifndef NSEC_PER_USEC
-# define NSEC_PER_USEC			1000ULL
-#endif
-
 static inline unsigned long long rdclock(void)
 {
 	struct timespec ts;