net/mlx5: E-switch, modify peer miss rule index to vhca_id

net/mlx5: E-switch, modify peer miss rule index to vhca_id

Replace the fixed-size array peer_miss_rules[MLX5_MAX_PORTS], indexed
by physical function index, with an xarray indexed by vhca_id.

This decouples peer_miss_rules from mlx5_get_dev_index(), removing the
dependency on a PF-derived index and the arbitrary MLX5_MAX_PORTS bounds
check. Using vhca_id as the key simplifies insertion/removal logic and
scales better across multi-peer topologies.

Initialize and destroy the xarray alongside the existing esw->paired
xarray in mlx5_esw_offloads_devcom_init/cleanup respectively.

Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20260309093435.1850724-6-tariqt@nvidia.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>