test: dm: Expand dm_test_ofnode_phandle(_ot) with new ofnode/tree_parse_phandle

Expand dm_test_ofnode_phandle(_ot) with new ofnode/tree_parse_phandle() op.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
3 files changed