NET: Lantiq: Make etop ethernet work on ASE / AR9

NET: Lantiq: Make etop ethernet work on ASE / AR9

Extend the driver to handle the different DMA channel layout for AR9 and
Amazon-SE SoCs. The patch also adds support for the integrated PHY found
on Amazon-SE and the gigabit switch found inside the AR9.

Signed-off-by: John Crispin <blogic@openwrt.org>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3262/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>