mb/google/poppy/variants/soraka: Disable SPI TPM

Soraka is no longer using SPI TPM. This change disables GSPI0 in
device tree and updates gpio config accordingly.

Change-Id: Ia0554ce3a0d553631123cc2b23b6dc2f6f40a1a3
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/22699
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2 files changed