net/mlx5: Refactor devcom to use match attributes

net/mlx5: Refactor devcom to use match attributes

Refactor the devcom interface to use a match attribute structure instead
of passing raw keys. This change lays the groundwork for extending
devcom matching logic with additional fields like net namespace,
improving its flexibility and robustness.

No functional changes.

Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/1757940070-618661-2-git-send-email-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>