NET: au1000-eth: Convert to platform_driver model

This patch converts the au1000-eth driver to become a full platform-driver
as it ought to be. We now pass PHY-speficic configurations through
platform_data but for compatibility the driver still assumes the default
settings (search for PHY1 on MAC0) when no platform_data is passed. Tested
on my MTX-1 board.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: netdev@vger.kernel.org
Acked-by: David S. Miller <davem@davemloft.net>
Patchwork: http://patchwork.linux-mips.org/patch/619/
Patchwork: http://patchwork.linux-mips.org/patch/963/Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

drivers/net/au1000_eth.h

@@ -108,6 +108,15 @@ struct au1000_private {
 	struct phy_device *phy_dev;
 	struct mii_bus *mii_bus;
 
+	/* PHY configuration */
+	int phy_static_config;
+	int phy_search_highest_addr;
+	int phy1_search_mac0;
+
+	int phy_addr;
+	int phy_busid;
+	int phy_irq;
+
 	/* These variables are just for quick access to certain regs addresses. */
 	volatile mac_reg_t *mac;  /* mac registers                      */
 	volatile u32 *enable;     /* address of MAC Enable Register     */