Disable the 8042 MUX on our x86 devices.

Disable the 8042 MUX on our x86 devices.

The use of the mux can cause issues with some EC 8042 controllers and
result in loss of keyboard/trackpad between suspend/resume/reboot cycles.
We will never have more than keyboard+trackpad attached through the 8042
on our devices so using the mux is unnecessary.

BUG=chrome-os-partner:2726
TEST=manual verification that mux is not probed at boot:

Original:
serio: i8042 KBD port at 0x60,0x64 irq 1
serio: i8042 AUX0 port at 0x60,0x64 irq 12
serio: i8042 AUX1 port at 0x60,0x64 irq 12
serio: i8042 AUX2 port at 0x60,0x64 irq 12
serio: i8042 AUX3 port at 0x60,0x64 irq 12

New:
serio: i8042 KBD port at 0x60,0x64 irq 1
serio: i8042 AUX port at 0x60,0x64 irq 12

Change-Id: I942ab86eb71941ab072ad6a17d15b067ca94439d

Review URL: http://codereview.chromium.org/6679031
(cherry picked from commit 4deda9c24f1deb015946c709d1d3d11f1c0e2325)

Committed: http://chrome-svn/viewvc/chromeos?view=rev&revision=f11165b

[Duncan Laurie, 2011-03-12 23:53:55]

This is the same change but in the R11 tree.

[Benson Leung, 2011-03-13 00:48:37]

On 2011/03/12 23:53:55, Duncan Laurie wrote:
> This is the same change but in the R11 tree.

LGTM

[puneetster, 2011-03-13 01:47:42]

LGTM