ARM: dts: BCM5301X: Specify MAC addresses on Luxul devices

Use NRAM (NVMEM device) and its "et0macaddr" variable (NVMEM cell) to
point Ethernet devices to their MAC addresses.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Link: https://lore.kernel.org/r/20230515083308.7612-1-zajec5@gmail.com


Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>