mainboard/google/{poppy,soraka}: Disable unused GSPI1 interface

TEST=Verified that board still boots to OS without any error.

Change-Id: I02d2a6cbcab92766a35993bfd20aaeed4ca22c90
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/20143
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
3 files changed