Enable MACsec (Media Access Control Security) support in the Mellanox
mlx5 driver by setting CONFIG_MLX5_MACSEC=y.
Enabling this configuration allows users to utilize hardware MACsec
offload capabilities on supported Mellanox ConnectX network adapters.
This provides point-to-point Layer 2 encryption at line rate while
significantly reducing CPU overhead.
The kmod-macsec dependency is intentionally omitted to make this an
opt-in feature. The offload support only builds if kmod-macsec is
also selected, preventing driver bloat for standard users.
Signed-off-by: Til Kaiser <mail@tk154.de>
Link: https://github.com/openwrt/openwrt/pull/25400
Signed-off-by: Robert Marko <robimarko@gmail.com>