[PATCH v4] doc: announce changes in bbdev related to enum extension

[Nicolas Chautru <nicolas.chautru@intel.com>]

Intent to resolve in DPDK 22.11 historical usage which prevents
graceful extension of enum and API without troublesome ABI breakage
as well as extending API RTE_BBDEV_OP_FFT for new operation type
in bbdev as well as other new members in existing structures.

Signed-off-by: Nicolas Chautru <nicolas.chautru@intel.com>
---
 doc/guides/rel_notes/deprecation.rst | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst
index 4e5b23c..c8ab1ec 100644
--- a/doc/guides/rel_notes/deprecation.rst
+++ b/doc/guides/rel_notes/deprecation.rst
@@ -112,6 +112,17 @@ Deprecation Notices
   session and the private data of session. An opaque pointer can be exposed
   directly to application which can be attached to the ``rte_crypto_op``.
 
+* bbdev: ``RTE_BBDEV_OP_TYPE_COUNT`` terminating the ``rte_bbdev_op_type``
+  enum will be deprecated and instead use fixed array size when required to allow for
+  future enum extension.
+  Will extend API to support new operation type ``RTE_BBDEV_OP_FFT`` as per this
+  RFC https://patchwork.dpdk.org/project/dpdk/list/?series=22111
+  New members will be added in ``rte_bbdev_driver_info`` to expose PMD queue topology inspired
+  by this RFC https://patches.dpdk.org/project/dpdk/list/?series=22076
+  New member will be added in ``rte_bbdev_driver_info`` to expose the device status as per
+  this RFC https://patches.dpdk.org/project/dpdk/list/?series=23367
+  This should be updated in DPDK 22.11.
+
 * security: Hide structure ``rte_security_session`` and expose an opaque
   pointer for the private data to the application which can be attached
   to the packet while enqueuing.
-- 
1.8.3.1