feat(stm32mp2-fdts): add sdmmc nodes in SoC DT file

Add the sdmmc1 & sdmmc2 nodes in stm32mp251.dtsi file, to support
eMMC or SD-cards.
To avoid increasing DT size if SD-card or eMMC boot is not selected,
the nodes are removed from DT thanks to stm32mp25-bl2.dtsi overlay.

Signed-off-by: Yann Gautier <yann.gautier@st.com>
Change-Id: I2ed841442b7dddf0c441ae3b3d2462ef535f9951
2 files changed