[PATCH] UBUNTU: SAUCE: acer-wmi: Add wireless quirk for Lenovo 3000 N200

[Seth Forshee]

This patch has been submitted upstream and acked by the acer-wmi
maintainer, but it has not yet been merged. Without this fix the
affected model has a permanent soft block on wireless whenever acer-wmi
is loaded, and the regression potential of the fix is very small as it
is a DMI quirk for a single model. Therefore, I'm proposing we SRU this
as a sauce patch at this time to get the fix into oneiric sooner.

== SRU Justification ==

Impact: acer-wmi is lacking a required quirk for the Lenovo 3000 N200
wlan rfkill. As a result, wireless is permanently blocked on this
machine whenever acer-wmi is loaded.

Fix: Add quirk to use the correct EC register for updating the wlan
rfkill status.

Testcase: Loading acer-wmi without the fix results in a permanent wlan
soft block. With the fix the rfkill switch behaves as expected. Verified
against natty on LP #857297.

BugLink: http://bugs.launchpad.net/bugs/857297