Revision 361234

MFC r361097:
  Send Lid status notification via devd from acpi_lid_status_update.

  Some laptops don't send ACPI "lid status changed" notifications upon
  opening the lid if the system was currently suspended.  In r358219
  this was partially fixed, updating the "lid_status" variable upon
  resume even if there is no "status changed" notification from ACPI.

  Unfortunately the fix in r358219 did not include notifying userland
  via devd; this causes problems on systems using upowerd (e.g. KDE),
  since upowerd remembers the most recent devd notification about the
  lid status rather than querying the sysctl to get the current status.

  This showed up as two symptoms when KDE's "When laptop lid closed: Sleep"
  option is set:
  1. 50% of the time, closing the lid would not trigger S3 sleep.
  2. 50% of the time, plugging/unplugging AC power would trigger S3 sleep.

PR:		246477