[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/arch/powerpc/sysdev/uic.c b/arch/powerpc/sysdev/uic.c
index 968fb40..8905989 100644
--- a/arch/powerpc/sysdev/uic.c
+++ b/arch/powerpc/sysdev/uic.c
@@ -221,7 +221,7 @@
 	const u32 *indexp, *dcrreg;
 	int len;
 
-	BUG_ON(! device_is_compatible(node, "ibm,uic"));
+	BUG_ON(! of_device_is_compatible(node, "ibm,uic"));
 
 	uic = alloc_bootmem(sizeof(*uic));
 	if (! uic)