feat(stm32mp2-fdts): add memory node

Add ddr node in stm32mp251.dtsi file, which gives addresses to DDR PHY
and DDR controller.

Signed-off-by: Yann Gautier <yann.gautier@st.com>
Change-Id: I719bfd1640a8217ff79e79b5b53845b75421d298
1 file changed