NetXen: Fix compile failure seen on PPC architecture

NetXen: Add NETXEN prefixes to macros to clean them up.
This is a cleanup patch which adds NETXEN prefix to some stand
alone macro names.
These posed compile errors when NetXen driver was backported to 2.6.9
on PPC architecture as macros like USER_START are defined in file
arch/ppc64/mm/hash_utils.c

Signed-off-by: Andy Gospodarek <andy@greyhouse.net>
Signed-off by: Wen Xiong <wenxiong@us.ibm.com>
Acked-off by: Mithlesh Thukral <mithlesh@netxen.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/net/netxen/netxen_nic_ethtool.c b/drivers/net/netxen/netxen_nic_ethtool.c
index 16fabb3..0175f6c 100644
--- a/drivers/net/netxen/netxen_nic_ethtool.c
+++ b/drivers/net/netxen/netxen_nic_ethtool.c
@@ -94,7 +94,7 @@
 
 static int netxen_nic_get_eeprom_len(struct net_device *dev)
 {
-	return FLASH_TOTAL_SIZE;
+	return NETXEN_FLASH_TOTAL_SIZE;
 }
 
 static void
@@ -470,7 +470,7 @@
 		return 0;
 	}
 
-	if (offset == BOOTLD_START) {
+	if (offset == NETXEN_BOOTLD_START) {
 		ret = netxen_flash_erase_primary(adapter);
 		if (ret != FLASH_SUCCESS) {
 			printk(KERN_ERR "%s: Flash erase failed.\n", 
@@ -478,10 +478,10 @@
 			return ret;
 		}
 
-		ret = netxen_rom_se(adapter, USER_START);
+		ret = netxen_rom_se(adapter, NETXEN_USER_START);
 		if (ret != FLASH_SUCCESS)
 			return ret;
-		ret = netxen_rom_se(adapter, FIXED_START);
+		ret = netxen_rom_se(adapter, NETXEN_FIXED_START);
 		if (ret != FLASH_SUCCESS)
 			return ret;