petc_input_filter: Close source devices

* Implement open() and close() on clone devs
* Use a separate key device to send wake key events

Bug: 303907422
Test: Manual. Confirmed in logs that pat9126 wake IRQ is disabled.
Change-Id: If48af7e9019c34684fe3daeae4ddca30608f97c3
Signed-off-by: Josh Thielen <jtln@google.com>
1 file changed
tree: c969578bad4ed513bbd1cc8faec983a076017996
  1. ots_pat9126/
  2. petc_input_filter/
  3. OWNERS