Merge: CNB97: ethtool: update ethtool core to upstream v6.15.

MR: https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-9/-/merge_requests/6775

JIRA: https://issues.redhat.com/browse/RHEL-89014

Update ethtool upto kernel v6.15.

Brew: [https://brewweb.engineering.redhat.com/brew/taskinfo?taskID=67396250](https://brewweb.engineering.redhat.com/brew/taskinfo?taskID=67705537)

Depends: !6842

Signed-off-by: Mohammad Heib <mheib@redhat.com>

New features:

- Include a new readable timestamping string, **'option-rx-filter'**, which will appear when using the -T option.
- add support for writing firmware blocks using EPL (Extended Payload).
- Make timestamping hardware PTP provider selectable.
- add support for configuring hds-thresh
- Add support for 200Gbps per lane link modes.

Omitted-fix: 6db9d3a netdevsim: don't assume core pre-populates HDS params on GET

* The targeted code was dropped during the update, so this fix is irrelevant.

Omitted-fix: 19f72d9 Docs/zh_CN: Translate index.rst to Simplified Chinese

* Changes are not relevant for networking.

Omitted-fix: 8694138 selftests: drv-net: wait for iperf client to stop sending

* [mschmidt] This is just for selftests. It appeared too late. We can't afford to block this MR any further.

Approved-by: Antoine Tenart <atenart@redhat.com>
Approved-by: Michal Schmidt <mschmidt@redhat.com>
Approved-by: Corinna Vinschen <vinschen@redhat.com>
Approved-by: CKI KWF Bot <cki-ci-bot+kwf-gitlab-com@redhat.com>

Merged-by: Augusto Caringi <acaringi@redhat.com>

Author: caringi

Documentation/netlink/genetlink-c.yaml

@@ -106,6 +106,9 @@ properties:
         name-prefix:
           description: For enum the prefix of the values, optional.
           type: string
+        enum-cnt-name:
+          description: Name of the render-max counter enum entry.
+          type: string
         # End genetlink-c
 
   attribute-sets:

Documentation/netlink/genetlink-legacy.yaml

@@ -117,6 +117,9 @@ properties:
         name-prefix:
           description: For enum the prefix of the values, optional.
           type: string
+        enum-cnt-name:
+          description: Name of the render-max counter enum entry.
+          type: string
         # End genetlink-c
         # Start genetlink-legacy
         members: