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/myri_sbus.c b/drivers/net/myri_sbus.c
index 04e552a..617f898 100644
--- a/drivers/net/myri_sbus.c
+++ b/drivers/net/myri_sbus.c
@@ -926,7 +926,7 @@
 	.ndo_validate_addr	= eth_validate_addr,
 };
 
-static int __devinit myri_sbus_probe(struct of_device *op, const struct of_device_id *match)
+static int __devinit myri_sbus_probe(struct platform_device *op, const struct of_device_id *match)
 {
 	struct device_node *dp = op->dev.of_node;
 	static unsigned version_printed;
@@ -1124,7 +1124,7 @@
 	return -ENODEV;
 }
 
-static int __devexit myri_sbus_remove(struct of_device *op)
+static int __devexit myri_sbus_remove(struct platform_device *op)
 {
 	struct myri_eth *mp = dev_get_drvdata(&op->dev);
 	struct net_device *net_dev = mp->dev;