gianfar: Add Multiple group Support

This patch introduces multiple group support for etsec2.0
devices.

Multiple group support is provided by mapping the set of enabled
queues to different groups and then programming the per group
regsiters imask, ievent, rstat, tstat.

The queues corresponding to a group are indicated by programming
isrg (interrupt steering) registers.

Signed-off-by: Sandeep Gopalpet <Sandeep.Kumar@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/gianfar_sysfs.c b/drivers/net/gianfar_sysfs.c
index 4b726f6..3724835 100644
--- a/drivers/net/gianfar_sysfs.c
+++ b/drivers/net/gianfar_sysfs.c
@@ -50,7 +50,7 @@
 				 const char *buf, size_t count)
 {
 	struct gfar_private *priv = netdev_priv(to_net_dev(dev));
-	struct gfar __iomem *regs = priv->gfargrp.regs;
+	struct gfar __iomem *regs = priv->gfargrp[0].regs;
 	int new_setting = 0;
 	u32 temp;
 	unsigned long flags;
@@ -105,7 +105,7 @@
 				      const char *buf, size_t count)
 {
 	struct gfar_private *priv = netdev_priv(to_net_dev(dev));
-	struct gfar __iomem *regs = priv->gfargrp.regs;
+	struct gfar __iomem *regs = priv->gfargrp[0].regs;
 	unsigned int length = simple_strtoul(buf, NULL, 0);
 	u32 temp;
 	unsigned long flags;
@@ -164,7 +164,7 @@
 				       const char *buf, size_t count)
 {
 	struct gfar_private *priv = netdev_priv(to_net_dev(dev));
-	struct gfar __iomem *regs = priv->gfargrp.regs;
+	struct gfar __iomem *regs = priv->gfargrp[0].regs;
 	unsigned short index = simple_strtoul(buf, NULL, 0);
 	u32 temp;
 	unsigned long flags;
@@ -212,7 +212,7 @@
 				       const char *buf, size_t count)
 {
 	struct gfar_private *priv = netdev_priv(to_net_dev(dev));
-	struct gfar __iomem *regs = priv->gfargrp.regs;
+	struct gfar __iomem *regs = priv->gfargrp[0].regs;
 	unsigned int length = simple_strtoul(buf, NULL, 0);
 	u32 temp;
 	unsigned long flags;
@@ -252,7 +252,7 @@
 				    const char *buf, size_t count)
 {
 	struct gfar_private *priv = netdev_priv(to_net_dev(dev));
-	struct gfar __iomem *regs = priv->gfargrp.regs;
+	struct gfar __iomem *regs = priv->gfargrp[0].regs;
 	unsigned int num = simple_strtoul(buf, NULL, 0);
 	u32 temp;
 	unsigned long flags;
@@ -293,7 +293,7 @@
 					const char *buf, size_t count)
 {
 	struct gfar_private *priv = netdev_priv(to_net_dev(dev));
-	struct gfar __iomem *regs = priv->gfargrp.regs;
+	struct gfar __iomem *regs = priv->gfargrp[0].regs;
 	unsigned int num = simple_strtoul(buf, NULL, 0);
 	u32 temp;
 	unsigned long flags;