nereid: adjust stack and buffer sizes for AP power-on
nereid: adjust stack and buffer sizes for AP power-on

Powering on the AP requires more stack for a number of tasks, so this
adjusts assorted stacks that became near-full (or overflowed) and frees
up some memory by shrinking other things.

BUG=b:223044986,b:201000950
TEST=Nereid AP power control runs, stacks do not overflow
BRANCH=none

Signed-off-by: Peter Marheine <ef0b2c492edde94778d7465bfbaeed52c5be6858@chromium.org>
Change-Id: Icce4d76022a5bac602d2f0f23541c395b0b04ada
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3522204
Reviewed-by: Andrew McRae <44ad1424cfc8411c96d9181798ca41ae55709dfb@google.com>
Commit-Queue: Andrew McRae <44ad1424cfc8411c96d9181798ca41ae55709dfb@google.com>

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