[POWERPC] tsi108: Constify & voidify get_property()

Now that get_property() returns a void *, there's no need to cast its
return value. Also, treat the return value as const, so we can
constify get_property later.

tsi108 driver changes.
Signed-off-by: NJeremy Kerr <jk@ozlabs.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

arch/powerpc/sysdev/tsi108_pci.c

@@ -195,7 +195,7 @@ int __init tsi108_setup_pci(struct device_node *dev)
 	int len;
 	struct pci_controller *hose;
 	struct resource rsrc;
-	int *bus_range;
+	const int *bus_range;
 	int primary = 0, has_address = 0;
 
 	/* PCI Config mapping */
@@ -208,7 +208,7 @@ int __init tsi108_setup_pci(struct device_node *dev)
 	has_address = (of_address_to_resource(dev, 0, &rsrc) == 0);
 
 	/* Get bus range if any */
-	bus_range = (int *)get_property(dev, "bus-range", &len);
+	bus_range = get_property(dev, "bus-range", &len);
 	if (bus_range == NULL || len < 2 * sizeof(int)) {
 		printk(KERN_WARNING "Can't get bus-range for %s, assume"
 		       " bus 0\n", dev->full_name);