ARM: dts: stm32: Add IWDG2 EXTI interrupt mapping and mark as wakeup source
The IWDG2 is capable of generating pre-timeout interrupt, which can be used to wake the system up from suspend to mem. Add the EXTI interrupt mapping and mark the IWDG2 as wake up source. Signed-off-by:Marek Vasut <marex@denx.de> Signed-off-by:
Alexandre Torgue <alexandre.torgue@foss.st.com>
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