Add the necessary infrastructure to support eSPI SMI events,
and a mainboard handler to pass control to the EC.
BUG=chrome-os-partner:58666
TEST=tested on eve board with eSPI enabled, verified that lid
close event from the EC during firmware will result in an SMI
and shut down the system.
Change-Id: I6367e233e070a8fca053a7bdd2534c0578d15d12
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://review.coreboot.org/17134
Tested-by: build bot (Jenkins)
Reviewed-by: Furquan Shaikh <furquan@google.com>
8d01902bb7