mv643xx_eth: get rid of static variables, allow multiple instances

Move mv643xx_eth's static state (ethernet register block base address
and MII management interface spinlock) into a struct hanging off the
shared platform device.  This is necessary to support chips that
contain multiple mv643xx_eth silicon blocks.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Dale Farnsworth <dale@farnsworth.org>

include/linux/mv643xx_eth.h

@@ -1,6 +1,7 @@
 /*
  * MV-643XX ethernet platform device data definition file.
  */
+
 #ifndef __LINUX_MV643XX_ETH_H
 #define __LINUX_MV643XX_ETH_H
 
@@ -13,7 +14,9 @@
 #define MV643XX_ETH_BASE_ADDR_ENABLE_REG	0x2290
 
 struct mv643xx_eth_platform_data {
+	struct platform_device	*shared;
 	int		port_number;
+
 	u16		force_phy_addr;	/* force override if phy_addr == 0 */
 	u16		phy_addr;