[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/char/tpm/tpm_atmel.h b/drivers/char/tpm/tpm_atmel.h
index 377bc60..c912d86 100644
--- a/drivers/char/tpm/tpm_atmel.h
+++ b/drivers/char/tpm/tpm_atmel.h
@@ -47,7 +47,7 @@
 	if (!dn)
 		return NULL;
 
-	if (!device_is_compatible(dn, "AT97SC3201")) {
+	if (!of_device_is_compatible(dn, "AT97SC3201")) {
 		of_node_put(dn);
 		return NULL;
 	}