[PATCH] arm64: dts: st: fix arm,smc-id of the SMC watchdog on stm32mp2

[Mateusz Nowicki]

Hi Alexandre,

Gentle ping on this fix, Antonio gave his Reviewed-by on Sep 8.

On current stm32-next the SMC watchdog still fails to probe on the
STM32MP257F-DK:

    arm_smc_wdt watchdog: probe with driver arm_smc_wdt failed with error -5

Could you take it for v7.4?

Thanks,
Mateusz