Use GPIO_134 as the EC sync interrupt and provide this value
to the embedded controller to be exported to the OS.
BRANCH=none
BUG=crbug:896347, b:118443377
CQ-DEPEND=CL:1298699
TEST=verify sensor events coming in on a reworked board
with companion EC and kernel patches
Change-Id: I41333cabe97bc8b0d59e19d84366f2ea2a59e026
Signed-off-by: Enrico Granata <egranata@chromium.org>
Reviewed-on: https://review.coreboot.org/29278
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>