Patch from Deepak Saxena

New IXP425 based platform from Intel. This machine is similar to
an ADI Coyote except for the addition of an on-board NEC ECHI
controller. Patch also fixes issue with board setup for Coyote
(and IXDPG425) that would cause the MTD driver to fail.

Signed-off-by: Deepak Saxena
Signed-off-by: Russell King