am c8b9afe0: Support multi-touch only when device has distinct multi-touch panel

Merge commit 'c8b9afe0378e3f33c3f83271bd1df9678a70c2a2' into gingerbread-plus-aosp

* commit 'c8b9afe0378e3f33c3f83271bd1df9678a70c2a2':
  Support multi-touch only when device has distinct multi-touch panel