mb/google/parrot: Fix smbus subsystem ID

The smbus subsystem ID was inadvertently reversed when added in commit
6974bcd28e ("mb/google/parrot: override SMBus subsystem ID"), so
correct it.

TEST=build/boot Win10 on parrot, verify touchpad driver functional.

Change-Id: I93d4812e24a6fc7419887e364974fcfae2465ea3
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82226
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>

src/mainboard/google/parrot/devicetree.cb

@@ -89,7 +89,7 @@ chip northbridge/intel/sandybridge
 			end # LPC bridge
 			device ref sata1 on end # SATA Controller 1
 			device ref smbus on
-				subsystemid 0x04B4 0x18D1
+				subsystemid 0x18D1 0x04B4
 			end # SMBus
 			device ref sata2 off end # SATA Controller 2
 			device ref thermal on end # Thermal