drivers: interrupt_controller: Add STM32G0X interrupt support

Add interrupt support for STM32G0X SoC series.

Signed-off-by: Philippe Retornaz <philippe@shapescale.com>
Signed-off-by: Francois Ramu <francois.ramu@st.com>

# Conflicts:
#	drivers/interrupt_controller/exti_stm32.c
3 files changed