dm: ofnode: rename ofnode_read_prop() to ofnode_get_property()

This function returns the pointer to the value of a node property.
The current name ofnode_read_prop() is confusing.  Follow the naming
of_get_property() from Linux.

The return type (const u32 *) is wrong.  DT property values can be
strings as well as integers.  This is why of_get_property/fdt_getprop
returns an opaque pointer.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/misc/cros_ec_sandbox.c b/drivers/misc/cros_ec_sandbox.c
index c96e26e..5924ade 100644
--- a/drivers/misc/cros_ec_sandbox.c
+++ b/drivers/misc/cros_ec_sandbox.c
@@ -197,7 +197,7 @@
 	int upto;
 	int len;
 
-	cell = ofnode_read_prop(node, "linux,keymap", &len);
+	cell = ofnode_get_property(node, "linux,keymap", &len);
 	ec->matrix_count = len / 4;
 	ec->matrix = calloc(ec->matrix_count, sizeof(*ec->matrix));
 	if (!ec->matrix) {