feat(stm32mp1): add sdmmc compatible in platform define

Add DT_SDMMC2_COMPAT define in stm32mp1_def.h file in platform.
It allows the use of the compatible in platform code.

Change-Id: I535ad67dd133bab59cf81881adaef42d8e88632c
Signed-off-by: Yann Gautier <yann.gautier@st.com>
1 file changed