[POWERPC] Rename get_property to of_get_property: drivers

These are all the remaining instances of get_property.  Simple rename of
get_property to of_get_property.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

drivers/char/briq_panel.c

@@ -206,7 +206,7 @@ static int __init briq_panel_init(void)
 	const char *machine;
 	int i;
 
-	machine = get_property(root, "model", NULL);
+	machine = of_get_property(root, "model", NULL);
 	if (!machine || strncmp(machine, "TotalImpact,BRIQ-1", 18) != 0) {
 		of_node_put(root);
 		return -ENODEV;