TCPMv2: Clean up typos and grammos
TCPMv2: Clean up typos and grammos

Also delete stale TODOs. Change CPRINTF to CPRINTS.

BUG=none
TEST=make buildall
BRANCH=none

Signed-off-by: Abe Levkoy <2e1ad7039298f93262cf06bbb457275fb3e2ecb5@chromium.org>
Change-Id: I8ae520c137af569526896b6e834e99522162e6f6
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2317902
Reviewed-by: Diana Z <cb2016afc7183e5356c690dc63b4ba817470501a@chromium.org>

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