[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/drivers/macintosh/windfarm_lm75_sensor.c b/drivers/macintosh/windfarm_lm75_sensor.c
index ab4d1b6..a0fabf3 100644
--- a/drivers/macintosh/windfarm_lm75_sensor.c
+++ b/drivers/macintosh/windfarm_lm75_sensor.c
@@ -188,10 +188,10 @@
 		if (loc == NULL || addr == 0)
 			continue;
 		/* real lm75 */
-		if (device_is_compatible(dev, "lm75"))
+		if (of_device_is_compatible(dev, "lm75"))
 			wf_lm75_create(adapter, addr, 0, loc);
 		/* ds1775 (compatible, better resolution */
-		else if (device_is_compatible(dev, "ds1775"))
+		else if (of_device_is_compatible(dev, "ds1775"))
 			wf_lm75_create(adapter, addr, 1, loc);
 	}
 	return 0;