[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/ide/pci/pdc202xx_new.c b/drivers/ide/pci/pdc202xx_new.c
index ace9892..ae20fb3 100644
--- a/drivers/ide/pci/pdc202xx_new.c
+++ b/drivers/ide/pci/pdc202xx_new.c
@@ -398,7 +398,7 @@
 	unsigned int class_rev = 0;
 	u8 conf;
 
-	if (np == NULL || !device_is_compatible(np, "kiwi-root"))
+	if (np == NULL || !of_device_is_compatible(np, "kiwi-root"))
 		return;
 
 	pci_read_config_dword(pdev, PCI_CLASS_REVISION, &class_rev);