kevin: reduce program size
kevin: reduce program size

Reduce size to port motion sensor

BUG=chrome-os-partner:52876
TEST=Can get build image with sensor job

Change-Id: I7ea0248d0067d25c644eb148c50e36514f9b2598
Signed-off-by: Wonjoon Lee <b961a80bc33bbc19346c547d1234eeb868c7ae74@samsung.com>
Reviewed-on: https://chromium-review.googlesource.com/342586
Reviewed-by: Shawn N <5259333ce42e3ace6a73988cec7115ed9d3a661a@chromium.org>

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