Add a new commands allowing to set the time stamping.

Example usage :
./ynl/cli.py --spec netlink/specs/ethtool.yaml --no-schema \
	     --do ts-list-get \
	     --json '{"header":{"dev-name":"eth0"}}'
{'header': {'dev-index': 3, 'dev-name': 'eth0'},
 'ts-list-layer': b'\x02\x00\x00\x00\x01\x00\x00\x00\x05\x00\x00\x00'}

./ynl/cli.py --spec netlink/specs/ethtool.yaml --no-schema --do ts-set \
	     --json '{"header":{"dev-name":"eth0"}, "ts-layer":5}'
none

./ynl/cli.py --spec netlink/specs/ethtool.yaml --no-schema --do ts-get \
	     --json '{"header":{"dev-name":"eth0"}}'
{'header': {'dev-index': 3, 'dev-name': 'eth0'}, 'ts-layer': 5}

Signed-off-by: Kory Maincent <kory.maincent@bootlin.com>
---
 Documentation/netlink/specs/ethtool.yaml | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Documentation/netlink/specs/ethtool.yaml b/Documentation/netlink/specs/ethtool.yaml
index 81ed8e5f2f55..cfee4bf32128 100644
--- a/Documentation/netlink/specs/ethtool.yaml
+++ b/Documentation/netlink/specs/ethtool.yaml
@@ -1740,3 +1740,12 @@ operations:
           attributes:
             - header
             - ts-list-layer
+    -
+      name: ts-set
+      doc: Set the timestamp device
+
+      attribute-set: ts
+
+      do:
+        request:
+          attributes: *ts

-- 
2.25.1