dm: core: Rename ofnode_get_first/next_property()

Drop the 'get' in these names since it does not fit with the rest of
the API.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/core/ofnode.c b/drivers/core/ofnode.c
index caf28c6..2feca56 100644
--- a/drivers/core/ofnode.c
+++ b/drivers/core/ofnode.c
@@ -780,7 +780,7 @@
 				   propname, lenp);
 }
 
-int ofnode_get_first_property(ofnode node, struct ofprop *prop)
+int ofnode_first_property(ofnode node, struct ofprop *prop)
 {
 	prop->node = node;
 
@@ -799,7 +799,7 @@
 	return 0;
 }
 
-int ofnode_get_next_property(struct ofprop *prop)
+int ofnode_next_property(struct ofprop *prop)
 {
 	if (ofnode_is_np(prop->node)) {
 		prop->prop = of_get_next_property(ofnode_to_np(prop->node),