Revert "atlas: do not fake power-on as reset-pin"
Revert "atlas: do not fake power-on as reset-pin"

This reverts commit fc1496d1bb84f74d539bc11a205d90926dc79740.

this change prevented us from entering recovery mode using the
3-finger salute.

the keyboard_scan.c:check_boot_key() depends the reset pin being
asserted as a prerequisite to checking the refresh key has been
pressed.  this means we never get as far as checking for the 3-finger
salute key combo.

BUG=b:75070158,b:111577561
BRANCH=stabilize-atlas.10819.B
TEST=3-finger salute now gets us into recovery

Original change's description:
> atlas: do not fake power-on as reset-pin
>
> atlas can detect a power-on reset, so we don't need to fake it as a
> reset-pin initiated reset.
>
> BUG=b:75070158
> BRANCH=none
> TEST=EC now claims the reset cause was power-on instead of reset on
> 	cold boot
>
> Change-Id: I0b0a58f79b605e768719249f1c139f6d46fec30b
> Signed-off-by: Caveh Jalali <caveh@chromium.org>
> Reviewed-on: https://chromium-review.googlesource.com/1098531
> Commit-Ready: Caveh Jalali <08e24a66aefda7a55ca7d73f8903e0fb16eec763@google.com>
> Tested-by: Caveh Jalali <08e24a66aefda7a55ca7d73f8903e0fb16eec763@google.com>
> Reviewed-by: Aseda Aboagye <aaboagye@chromium.org>

Bug: b:75070158
Change-Id: Ia3bb9ccecbb69e35b1cec48dabfc5e99b29a3b17
Reviewed-on: https://chromium-review.googlesource.com/1161226
Commit-Ready: Caveh Jalali <08e24a66aefda7a55ca7d73f8903e0fb16eec763@google.com>
Tested-by: Caveh Jalali <08e24a66aefda7a55ca7d73f8903e0fb16eec763@google.com>
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