Add support for loadable profiles

Split the only existing profile, tiobench, into this setup.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/debug.h b/debug.h
index 1a2b79a..71b346d 100644
--- a/debug.h
+++ b/debug.h
@@ -16,6 +16,7 @@
 	FD_DISKUTIL,
 	FD_JOB,
 	FD_MUTEX,
+	FD_PROFILE,
 	FD_DEBUG_MAX,
 };