Add ordered extents tracepoints to btrfs probe

Add ordered extents tracepoints to btrfs probe

See upstream commit:

  commit 5bea2508811ec76105b01c90c1f1661024c257a9
  Author: Johannes Thumshirn <johannes.thumshirn@wdc.com>
  Date:   Thu Jun 9 09:28:04 2022 -0700

    btrfs: add tracepoints for ordered extents

    When debugging a reference counting issue with ordered extents, I've found
    we're lacking a lot of tracepoint coverage in the ordered extent code.

    Close these gaps by adding tracepoints after every refcount_inc() in the
    ordered extent code.

Change-Id: I3af5bd593f4b7beb835f4c87442e7e1d407a2e3d
Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>