Revert "driver:staging:mfd: Remove seco-stm32 driver"
This reverts commit but does not enabe the defconfig flag to be able to build it out-of-yocto. Update the driver to latest state 2cbb602e.
This reverts commit but does not enabe the defconfig flag to be able to build it out-of-yocto. Update the driver to latest state 2cbb602e.