ARM: dts: stm32: Do clean up in stmpic nodes on stm32mp15 boards

Remove unused properties from stpmic node.
The issues have been detected by running dtbs_check.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
3 files changed