[SPARC/64] Rename some functions like PowerPC

This is to make the of merge easier.  Also rename of_bus_type.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: David S. Miller <davem@davemloft.net>

arch/sparc64/kernel/power.c

@@ -170,6 +170,6 @@ static struct of_platform_driver power_driver = {
 
 void __init power_init(void)
 {
-	of_register_driver(&power_driver, &of_bus_type);
+	of_register_driver(&power_driver, &of_platform_bus_type);
 	return;
 }