sparc: remove references to of_device and to_of_device

of_device is just a #define alias to platform_device.  This patch
replaces all references to it with platform_device.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/kernel/prom_irqtrans.c b/arch/sparc/kernel/prom_irqtrans.c
index 5702ad4..ce65114 100644
--- a/arch/sparc/kernel/prom_irqtrans.c
+++ b/arch/sparc/kernel/prom_irqtrans.c
@@ -719,7 +719,7 @@
 				      void *_data)
 {
 	struct device_node *central_dp = _data;
-	struct of_device *central_op = of_find_device_by_node(central_dp);
+	struct platform_device *central_op = of_find_device_by_node(central_dp);
 	struct resource *res;
 	unsigned long imap, iclr;
 	u32 tmp;