[POWERPC] Rename device_is_compatible to of_device_is_compatible

for consistency with other Open Firmware interfaces (and Sparc).

This is just a straight replacement.

This leaves the compatibility define in place.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/sound/aoa/codecs/snd-aoa-codec-tas.c b/sound/aoa/codecs/snd-aoa-codec-tas.c
index ceca384..041fe52 100644
--- a/sound/aoa/codecs/snd-aoa-codec-tas.c
+++ b/sound/aoa/codecs/snd-aoa-codec-tas.c
@@ -938,7 +938,7 @@
 	busnode = pmac_i2c_get_bus_node(bus);
 
 	while ((dev = of_get_next_child(busnode, dev)) != NULL) {
-		if (device_is_compatible(dev, "tas3004")) {
+		if (of_device_is_compatible(dev, "tas3004")) {
 			const u32 *addr;
 			printk(KERN_DEBUG PFX "found tas3004\n");
 			addr = of_get_property(dev, "reg", NULL);