[POWERPC] Rename get_property to of_get_property: drivers

These are all the remaining instances of get_property.  Simple rename of
get_property to of_get_property.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/drivers/char/agp/uninorth-agp.c b/drivers/char/agp/uninorth-agp.c
index 91b0621..42c0a60 100644
--- a/drivers/char/agp/uninorth-agp.c
+++ b/drivers/char/agp/uninorth-agp.c
@@ -613,7 +613,7 @@
 		uninorth_node = of_find_node_by_name(NULL, "u3");
 	}
 	if (uninorth_node) {
-		const int *revprop = get_property(uninorth_node,
+		const int *revprop = of_get_property(uninorth_node,
 				"device-rev", NULL);
 		if (revprop != NULL)
 			uninorth_rev = *revprop & 0x3f;