The STM32 MCUs family IPs can be reset by accessing some registers
from the RCC block.

The list of available reset lines is documented in the DT bindings.
Signed-off-by: NMaxime Coquelin <mcoquelin.stm32@gmail.com>
Signed-off-by: NGabriel Fernandez <gabriel.fernandez@st.com>
Signed-off-by: NPhilipp Zabel <p.zabel@pengutronix.de>