ARM: DT: STiH410: Add bdisp dt nodes

Add the bdisp (2D blitter for STMicroelectronics SoC) dt nodes for the
first of the two bdisp devices, defining register address, interrupt and
clock.

Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>