of/device: Replace struct of_device with struct platform_device

of_device is just an alias for platform_device, so remove it entirely.  Also
replace to_of_device() with to_platform_device() and update comment blocks.

This patch was initially generated from the following semantic patch, and then
edited by hand to pick up the bits that coccinelle didn't catch.

@@
@@
-struct of_device
+struct platform_device

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Reviewed-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ibm_newemac/rgmii.c b/drivers/net/ibm_newemac/rgmii.c
index 108919b..dd61798 100644
--- a/drivers/net/ibm_newemac/rgmii.c
+++ b/drivers/net/ibm_newemac/rgmii.c
@@ -93,7 +93,7 @@
 	}
 }
 
-int __devinit rgmii_attach(struct of_device *ofdev, int input, int mode)
+int __devinit rgmii_attach(struct platform_device *ofdev, int input, int mode)
 {
 	struct rgmii_instance *dev = dev_get_drvdata(&ofdev->dev);
 	struct rgmii_regs __iomem *p = dev->base;
@@ -122,7 +122,7 @@
 	return 0;
 }
 
-void rgmii_set_speed(struct of_device *ofdev, int input, int speed)
+void rgmii_set_speed(struct platform_device *ofdev, int input, int speed)
 {
 	struct rgmii_instance *dev = dev_get_drvdata(&ofdev->dev);
 	struct rgmii_regs __iomem *p = dev->base;
@@ -144,7 +144,7 @@
 	mutex_unlock(&dev->lock);
 }
 
-void rgmii_get_mdio(struct of_device *ofdev, int input)
+void rgmii_get_mdio(struct platform_device *ofdev, int input)
 {
 	struct rgmii_instance *dev = dev_get_drvdata(&ofdev->dev);
 	struct rgmii_regs __iomem *p = dev->base;
@@ -165,7 +165,7 @@
 	DBG2(dev, " fer = 0x%08x\n", fer);
 }
 
-void rgmii_put_mdio(struct of_device *ofdev, int input)
+void rgmii_put_mdio(struct platform_device *ofdev, int input)
 {
 	struct rgmii_instance *dev = dev_get_drvdata(&ofdev->dev);
 	struct rgmii_regs __iomem *p = dev->base;
@@ -186,7 +186,7 @@
 	mutex_unlock(&dev->lock);
 }
 
-void rgmii_detach(struct of_device *ofdev, int input)
+void rgmii_detach(struct platform_device *ofdev, int input)
 {
 	struct rgmii_instance *dev = dev_get_drvdata(&ofdev->dev);
 	struct rgmii_regs __iomem *p;
@@ -206,13 +206,13 @@
 	mutex_unlock(&dev->lock);
 }
 
-int rgmii_get_regs_len(struct of_device *ofdev)
+int rgmii_get_regs_len(struct platform_device *ofdev)
 {
 	return sizeof(struct emac_ethtool_regs_subhdr) +
 		sizeof(struct rgmii_regs);
 }
 
-void *rgmii_dump_regs(struct of_device *ofdev, void *buf)
+void *rgmii_dump_regs(struct platform_device *ofdev, void *buf)
 {
 	struct rgmii_instance *dev = dev_get_drvdata(&ofdev->dev);
 	struct emac_ethtool_regs_subhdr *hdr = buf;
@@ -228,7 +228,7 @@
 }
 
 
-static int __devinit rgmii_probe(struct of_device *ofdev,
+static int __devinit rgmii_probe(struct platform_device *ofdev,
 				 const struct of_device_id *match)
 {
 	struct device_node *np = ofdev->dev.of_node;
@@ -293,7 +293,7 @@
 	return rc;
 }
 
-static int __devexit rgmii_remove(struct of_device *ofdev)
+static int __devexit rgmii_remove(struct platform_device *ofdev)
 {
 	struct rgmii_instance *dev = dev_get_drvdata(&ofdev->dev);