octeon_ep: Add support to retrieve hardware channel information

This patch introduces support for retrieving hardware channel
configuration through the ethtool interface.

Signed-off-by: Sathesh B Edara <sedara@marvell.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250925125134.22421-2-sedara@marvell.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>