keyboard: it83xx: add COL02 inverted feature
keyboard: it83xx: add COL02 inverted feature

The other chips support this feature so we implement it too.

Signed-off-by: Dino Li <00c808bcd0610e8dd73a10880490949c0c589d41@ite.com.tw>

BRANCH=none
BUG=none
TEST=The behavior of kso2 is inverted
     if define 'CONFIG_KEYBOARD_COL2_INVERTED'.

Change-Id: I70d1694ca7d3d10278a484a632e88dc204b71b23
Reviewed-on: https://chromium-review.googlesource.com/342488
Commit-Ready: Dino Li <00c808bcd0610e8dd73a10880490949c0c589d41@ite.com.tw>
Tested-by: Dino Li <00c808bcd0610e8dd73a10880490949c0c589d41@ite.com.tw>
Reviewed-by: Randall Spangler <62698fdbb84d1779579ee80c3f39fac22017e5bc@chromium.org>

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