[POWERPC] Use for_each macros in arch/powerpc/platforms/powermac

Signed-off-by: NCyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

arch/powerpc/platforms/powermac/low_i2c.c

@@ -585,8 +585,7 @@ static void __init kw_i2c_probe(void)
 	struct device_node *np, *child, *parent;
 
 	/* Probe keywest-i2c busses */
-	for (np = NULL;
-	     (np = of_find_compatible_node(np, "i2c","keywest-i2c")) != NULL;){
+	for_each_compatible_node(np, "i2c","keywest-i2c") {
 		struct pmac_i2c_host_kw *host;
 		int multibus, chans, i;