irqchip/stm32: Fix initial values

-After cold boot, imr default value depends on hardware configuration.
-After hot reboot the registers must be cleared to avoid residue.

Signed-off-by: Ludovic Barre <ludovic.barre@st.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Ludovic Barre 2017-11-06 18:03:35 +01:00 • committed by Marc Zyngier
commit 2ca6b9bcaa