[PATCH v2 4/5] doc: add release note entry for SSE removal

[Ciara Loftus <ciara.loftus@intel.com>]

The SSE paths have been removed from the i40e, iavf and ice Intel
drivers. Add a release note documenting their removal.

Signed-off-by: Ciara Loftus <ciara.loftus@intel.com>
---
 doc/guides/rel_notes/release_26_03.rst | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/doc/guides/rel_notes/release_26_03.rst b/doc/guides/rel_notes/release_26_03.rst
index 15dabee7a1..a50f6ee231 100644
--- a/doc/guides/rel_notes/release_26_03.rst
+++ b/doc/guides/rel_notes/release_26_03.rst
@@ -68,6 +68,13 @@ Removed Items
    Also, make sure to start the actual text at the margin.
    =======================================================
 
+* **Removed the SSE vector paths from some Intel drivers.**
+
+  The SSE path was not widely used, so it was removed from the i40e, iavf and
+  ice drivers. Each of these drivers have faster vector paths (AVX2 and
+  AVX-512) which have feature parity with the SSE paths, and a fallback scalar
+  path which also has feature parity.
+
 
 API Changes
 -----------
-- 
2.43.0