The original hardware only supported 10M and 100M. Later versions
added 1G support. Here we update the driver to make use of this.
Also minor logic clean-ups for testing PHY registration error codes
and TX complete high water marks.
Signed-off-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Cc: David S. Miller <davem@davemloft.net> Cc: netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org,
Patchwork: https://patchwork.linux-mips.org/patch/4283/ Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>