dt-bindings: mfd: Add STM32F7 SDMMC2 rcc entry

STM32F769 SoC provides 2 SDMMC instances, add missing
RCC SDMMC2 entry for it.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
1 file changed