This patch updates Alder Lake code to use the common eSPI header file
(`intelpch/espi.h`) instead of the SoC-specific one.
BUG=none
TEST=Builds successfully for google/redrix.
Change-Id: Ib4452547325042de48ee4fca3d3910a031b56b64
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83484
Reviewed-by: Eric Lai <ericllai@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>