ARM: dts: aspeed: bletchley: Enable wdtrst1

Enable WDTRST1 external signal to send a reset pulse to peripherals while
BMC reset.

Signed-off-by: Potin Lai <potin.lai.pt@gmail.com>
Reviewed-by: Patrick Williams <patrick@stwcx.xyz>
Link: https://lore.kernel.org/r/20221226054535.2836110-3-potin.lai.pt@gmail.com


Signed-off-by: Joel Stanley <joel@jms.id.au>