events: x11: Use device path to detect internal keyboards

events: x11: Use device path to detect internal keyboards

Use the device's path in the device tree rather than a device name
whitelist to determine if it is permanently attached. This is consistent
with the strategy we've been using for touchscreens.

This slightly changes the code to just remove non-keyboards from the
keyboard list, instead of overloading INPUT_DEVICE_UNKNOWN to mean it is
not a keyboard.

TEST=manual on chromeos build on ubuntu
BUG=437539
Committed: https://crrev.com/f9ac82d3db93d4b61ed3436b528681c8a0252caf
Cr-Commit-Position: refs/heads/master@{#308178}

[spang, 2014-12-11 02:40:26]

spang@chromium.org changed reviewers:
+ rsadam@chromium.org, sadrul@chromium.org

[spang, 2014-12-11 02:40:26]

depends on https://codereview.chromium.org/791743004/

[sadrul, 2014-12-11 15:44:50]

lgtm

[rsadam, 2014-12-11 16:38:19]

lgtm

[spang, 2014-12-12 18:48:24]

The CQ bit was checked by spang@chromium.org

[commit-bot: I haz the power, 2014-12-12 18:49:16]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/798453002/1

[commit-bot: I haz the power, 2014-12-12 21:14:39]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-12-12 21:14:40]

Try jobs failed on following builders:
  linux_chromium_asan_rel on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[spang, 2014-12-12 21:15:11]

The CQ bit was checked by spang@chromium.org

[commit-bot: I haz the power, 2014-12-12 21:17:13]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/798453002/1

[commit-bot: I haz the power, 2014-12-12 22:14:19]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-12-12 22:15:16]

Patchset 1 (id:??) landed as
https://crrev.com/f9ac82d3db93d4b61ed3436b528681c8a0252caf
Cr-Commit-Position: refs/heads/master@{#308178}