feat(stm32mp25-fdts): add DDR power supplies

Add the required power supplies for DDR nodes. The power supplies are
provided by STPMIC2 regulators.

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Change-Id: I951da75a554bc4fbfbc69ea9cd1171d99ed7ce46
1 file changed