atlas: config PROCHOT GPIO as input
atlas: config PROCHOT GPIO as input

we need to configure EC_PROCHOT_ODL as an input because the EC isn't
driving it correctly.  we changed the polarity of EC_PROCHOT for atlas
and similar boards, but the EC codebase has this hard-coded as
active-high.

this is a short-term fix until we implement a more general PROCHOT
"polarity" feature.

BUG=b:78911901,b:79266467
BRANCH=none
TEST=checked voltage drop across in-line resistor on EC_PROCHOT and
AP can now run above 400MHz

Change-Id: I8c3224c62ea7af4f386062d39c248d418e73fa53
Signed-off-by: Caveh Jalali <08e24a66aefda7a55ca7d73f8903e0fb16eec763@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1045556
Commit-Ready: Caveh Jalali <08e24a66aefda7a55ca7d73f8903e0fb16eec763@google.com>
Tested-by: Caveh Jalali <08e24a66aefda7a55ca7d73f8903e0fb16eec763@google.com>
Tested-by: caveh jalali <08e24a66aefda7a55ca7d73f8903e0fb16eec763@chromium.org>
Reviewed-by: Aseda Aboagye <12c9b286316a940fd31c24070da5ab64cdd4d0e7@chromium.org>
Reviewed-by: Caveh Jalali <08e24a66aefda7a55ca7d73f8903e0fb16eec763@google.com>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec