phy: dp83826: Add phy IDs for DP83826N and 826NC

commit 783da36b from upstream

Add phy IDs to the DP83822 phy driver for the DP83826N
and the DP83826NC devices.  The register map and features
are the same for basic enablement.

Signed-off-by: Dan Murphy <dmurphy@ti.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 783da36b)