** Tags removed: verification-needed-bionic
** Tags added: verification-done-bionic

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  input/mouse: alps trackpoint-only device doesn't work

Status in HWE Next:
Status in linux package in Ubuntu:
  Fix Committed
Status in linux-oem-osp1 package in Ubuntu:
  Fix Released
Status in linux source package in Bionic:
Status in linux-oem-osp1 source package in Bionic:
  Fix Released

Bug description:
  On one of the latest Lenovo laptops, the trackpoint doesn't work, we
  consulted apls guys, they said this trackpoint is different from others,
  it is a trackpoint-only device, so the current alps.c doesn't support it
  well, while the trackpoint.c can drive it well.

  Check if it is trakcpoint-only device, if it yes, let trackpoint.c
  handle it.

  [Test Case]
  apply this patch and boot with the kernel, the trackpoint can work

  [Regression Risk]
  Low. the way of detect trackpoint-only alps device is provided by
  alps. so it is pretty safe.

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