[PATCH] doc: announce marking bus object as internal

[David Marchand]

rte_bus is unnecessarily exposed in the public API/ABI.
Besides, we had cases where extending rte_bus was necessary.
Announce that rte_bus will be made opaque in the public API and mark
associated API as internal.

Signed-off-by: David Marchand <david.marchand at redhat.com>
---
A RFC series of the intended changes is available at:
https://patches.dpdk.org/project/dpdk/list/?series=23811&state=%2A&archive=both

---
 doc/guides/rel_notes/deprecation.rst | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst
index 64d649777a..a9fd6676be 100644
--- a/doc/guides/rel_notes/deprecation.rst
+++ b/doc/guides/rel_notes/deprecation.rst
@@ -32,6 +32,12 @@ Deprecation Notices
   ``__atomic_thread_fence`` must be used for patches that need to be merged in
   20.08 onwards. This change will not introduce any performance degradation.
 
+* bus: The ``rte_bus`` object will be made opaque in DPDK 22.11.
+  The goal is to remove it from the public ABI and make this object extendable.
+  As a side effect, registering a bus will be marked as an internal API:
+  external users may still register their bus using a new driver header (see
+  ``enable_driver_sdk`` meson option).
+
 * mempool: Helper macro ``MEMPOOL_HEADER_SIZE()`` is deprecated and will
   be removed in DPDK 22.11. The replacement macro
   ``RTE_MEMPOOL_HEADER_SIZE()`` is internal only.
-- 
2.36.1