[PATCH 0/8] [MV643XX_ETH] Add Orion support, and assorted cleanups

This patch series adds support for the Orion's ethernet MAC
(which is the same MAC as in the Discovery 643xx) to the mv643xx_eth
driver, and performs various random cleanups all over the driver.

Patches 1-3 are cleanups necessary to be able to support Orion.

Patch 4 enables mv643xx_eth for ARCH_ORION.

Patches 5-8 are more cleanups.