ARM: dts: stih410: change syntax of multiple DAI

With change of syntax for 'simple-audio-card,dai-link' containers,
devicetrees of stih410 must be updated.

This fixes the following error:

[    3.839466] asoc-simple-card sound: asoc_simple_card_dai_link_of:
Can't find simple-audio-card,cpu DT node
[    3.849150] asoc-simple-card sound: parse error -22

Signed-off-by: Christophe Priouzeau <christophe.priouzeau@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>