soc: stm32h7r/s: smps is supported on all SoCs

Remove the sanity check between Cube HAL SMPS symbol and Kconfig SMPS
configuration.
SMPS is available on all STM32H7R/S SoC, so misalignment isn't possible.

Additionally, point to the hal commit which revert the fix which was done
on hal_stm32 to add this symbol.

Signed-off-by: Erwan Gouriou <erwan.gouriou@st.com>