Propagate orientation min/max up to next level of input stack

This information is important to gestures library when scaling touch
major and minor input, which may adjustment their values according to
orientation of fingers.  So send it up.

BUG=chromium-os:29435
TEST=connect Apple Magic Trackpad, and observe gestures library has
     received orientation min/max [-31, 32]

Change-Id: I3a3b6dfcc7660aa2175fbb4d3e6213b8efdb3d5f
Reviewed-on: https://gerrit.chromium.org/gerrit/35295
Commit-Ready: Che-Liang Chiou <clchiou@chromium.org>
Tested-by: Che-Liang Chiou <clchiou@chromium.org>
Reviewed-by: Che-Liang Chiou <clchiou@chromium.org>
4 files changed