This patch makes STM32 PWR regulators available on stm32mp13xx.
This requires TFA to clear RCC_SECCFGR, is disabled by default
on stm32mp13xx and can only be enabled on board config level.
Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>