mb/google/butterfly: Fix smbus subsystem ID
The smbus subsystem ID was inadvertently reversed when added in commit
a6076cfcfdbe ("mb/google/butterfly: override SMBus subsystem ID"), so
correct it.
TEST=build/boot Win10 on butterfly, verify touchpad driver functional.
Change-Id: If4a0eae06bbe4dcba893a42797e371bbf9f899b9
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82225
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>