Add Mac address to Asus device config panel

[Mariusthvdb]

Identifying a device is quite difficult when the Mac address is not displayed in the config panel. Especially in the cases where the system adds the suffix _2, _3, and no other difference in the panel is displayed. We can see the info in the Router list, based on ip_address/Mac address, but not in HA config entry panel.

Please consider adding the devices Mac address.
Checking the core.device_registry shows its there, so no core issue,

            {
                "config_entries": [
                    "3redfactedc1"
                ],
                "connections": [
                    [
                        "mac",
                        "28:37:37:41:0a:33"
                    ]
                ],
                "identifiers": [
                    [
                        "asuswrt",
                        "28:37:37:41:0A:33"
                    ]
                ],
                "manufacturer": "AsusWRT Tracked device",
                "model": null,
                "name": "auditorium",
                "sw_version": null,
                "entry_type": null,
                "id": "fdcredacted3c",
                "via_device_id": null,
                "area_id": null,
                "name_by_user": null,
                "disabled_by": null
            },