ARM: dts: aspeed: bletchley: Change LED sys_log_id to active low

change LED sys_log_id to active low base on DVT schematic.

Signed-off-by: Potin Lai <potin.lai.pt@gmail.com>
Reviewed-by: Patrick Williams <patrick@stwcx.xyz>
Link: https://lore.kernel.org/r/20220613095150.21917-2-potin.lai.pt@gmail.com


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