f2fs-tools: define HAVE_CLOCK_GETTIME properly

HAVE_CLOCK_GETTIME wasn't defined during autoconf, leading to
messages like "Done: 0.000000 secs" on Linux distros.

Signed-off-by: Juhyung Park <qkrwngud825@gmail.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
1 file changed