mb/google/{auron,link,slippy}/acpi: Drop EC serial port

The EC serial port on these devices is not accessible to the end user
and exposing it to the OS via ACPI serves no purpose. Debugging over
the EC serial port (via the servo interface) does not require the
ACPI exist. Drop it since it's not needed and serves no purpose.

TEST=build/boot Win11 on auron/link/slippy, verify Windows Device
Manager no longer shows an unusable COM port.

Change-Id: If453bfca8e094aa06043293bdf91a40c38cc7866
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76793
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
Reviewed-by: CoolStar <coolstarorganization@gmail.com>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions