net: dsa: mt7530: fix module autoloading for OF platform drivers

net: dsa: mt7530: fix module autoloading for OF platform drivers

[ Upstream commit 3c82b372a9f44aa224b8d5106ff6f1ad516fa8a8 ]

It's required to create a modules.alias via MODULE_DEVICE_TABLE helper
for the OF platform driver. Otherwise, module autoloading cannot work.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>