feat(stm32mp1): manage HSLV on STM32MP13

On STM32MP13, the high speed mode for pads in low voltage is different
from STM32MP15. Each peripheral supporting the feature has its own
register.
Special care is taken for SDMMC peripherals. The HSLV mode is enabled
only if the max voltage for the pads is lower or equal to 1.8V.

Change-Id: Id94d2cca17dd4aca4d764230a643b2bb9a5f3342
Signed-off-by: Yann Gautier <yann.gautier@st.com>