Set spacecast MAC_ADDR to eth1.

Spacecast phy is hooked to GEMAC 1. Therefore, we should set eth1 to
MAC_ADDR. In the meantime MAC_ADDR_WAN is not used any more. Thus the
removal.

Change-Id: Ib1f454abdea1ef499f0dfb3bc45f82bfd7424e6a
1 file changed