fix(stm32mp1-fdts): remove mmc1 alias if not needed

If a board declares an mmc1 alias in its DT and is compiled without flags
STM32MP_EMMC or STM32MP_SDMMC, the DT will fail to build.
Add /delete-property/ mmc1; to correct this.

Signed-off-by: Yann Gautier <yann.gautier@st.com>
Change-Id: I1938ff99dc3d883f9174ee886f9ffa195ec60373
1 file changed