[PATCH v5 4/4] doc: update IAVF driver guide and 22.07 release notes

[Wenjun Wu <wenjun1.wu@intel.com>]

Add driver guide and update the release notes for
quanta size configuration.

Signed-off-by: Wenjun Wu <wenjun1.wu@intel.com>
---
 doc/guides/nics/intel_vf.rst           | 4 ++++
 doc/guides/rel_notes/release_22_07.rst | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/doc/guides/nics/intel_vf.rst b/doc/guides/nics/intel_vf.rst
index 648af39c22..6498135655 100644
--- a/doc/guides/nics/intel_vf.rst
+++ b/doc/guides/nics/intel_vf.rst
@@ -92,6 +92,10 @@ For more detail on SR-IOV, please refer to the following documents:
     available for IAVF PMD. The same devargs with the same parameters can be applied to IAVF PMD, for detail please reference
     the section ``Protocol extraction for per queue`` of ice.rst.
 
+    Quanta size configuration is also supported when IAVF is backed by an Intel® E810 device by setting ``devargs``
+    parameter ``quanta_size`` like ``-a 18:00.0,quanta_size=2048``. The default value is 1024, and quanta size should be
+    set as the product of 64 in legacy host interface mode.
+
 The PCIE host-interface of Intel Ethernet Switch FM10000 Series VF infrastructure
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
diff --git a/doc/guides/rel_notes/release_22_07.rst b/doc/guides/rel_notes/release_22_07.rst
index 42a5f2d990..f1b4057d70 100644
--- a/doc/guides/rel_notes/release_22_07.rst
+++ b/doc/guides/rel_notes/release_22_07.rst
@@ -55,6 +55,10 @@ New Features
      Also, make sure to start the actual text at the margin.
      =======================================================
 
+* **Updated Intel iavf driver.**
+
+  * Added Tx QoS queue rate limitation support.
+  * Added quanta size configuration support.
 
 Removed Items
 -------------
-- 
2.25.1