arm64: dts: armada-3720-turris-mox: Add missing ethernet0 alias

stable inclusion
from stable-v5.10.106
commit ea3a5e6df5127fcd1e31462e64a35e0e7c7ed9f9
bugzilla: https://gitee.com/openeuler/kernel/issues/I573US

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=ea3a5e6df5127fcd1e31462e64a35e0e7c7ed9f9



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[ Upstream commit a0e897d1 ]

U-Boot uses ethernet* aliases for setting MAC addresses. Therefore define
also alias for ethernet0.

Fixes: 7109d817 ("arm64: dts: marvell: add DTS for Turris Mox")
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Yu Liao <liaoyu15@huawei.com>
Reviewed-by: Wei Li <liwei391@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>