COIL: Rename comments in BB retimer
COIL: Rename comments in BB retimer

Rename i2c comments in the BB retimer to reflect current naming
conventions.

BRANCH=None
BUG=None
TEST=make -j buildall

Signed-off-by: Diana Z <cb2016afc7183e5356c690dc63b4ba817470501a@chromium.org>
Change-Id: I8160b851b84795ffd13934c2be2e12fd2a04c5f5
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2649350
Reviewed-by: Daisuke Nojiri <fd5f93af191bf7e8f73ea71cc3c0f66b41b1dd49@chromium.org>

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