The display nodes are common to both STiH407 and STiH410, move them to the
family file.
Acked-by: NPatrice Chotard <patrice.chotard@st.com>
Acked-by: NPeter Griffin <peter.griffin@linaro.org>
Signed-off-by: NMaxime Coquelin <maxime.coquelin@st.com>