motion_lid: Set tablet mode at 180 degree
motion_lid: Set tablet mode at 180 degree

This change aligns tablet mode detection in EC to match the behavior
of Chrome. When lid angle goes beyond 200 degree, tablet mode is set
to 1. On the other hand, tablet mode is set to 0 when lid angle goes
below 160 degree.

BUG=b:120050761
BRANCH=None
TEST=make -j buildall. Verified that EC reports tablet mode close to 180
degrees.

Change-Id: If20a8e7545683b2a01f401f7db8d7973e70deb14
Signed-off-by: Furquan Shaikh <6be5c96c464778f89679b1062a2e0a6af93d2aa5@google.com>
Reviewed-on: https://chromium-review.googlesource.com/1350472
Commit-Ready: Furquan Shaikh <6be5c96c464778f89679b1062a2e0a6af93d2aa5@chromium.org>
Tested-by: Furquan Shaikh <6be5c96c464778f89679b1062a2e0a6af93d2aa5@chromium.org>
Reviewed-by: Aaron Durbin <af0622ab041e8b0f8e5819838dcc93898196e71f@chromium.org>
Reviewed-by: Jett Rink <9d4aef0593e6843318d99df31597fb6153b89787@chromium.org>

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