Input: I8042 - add Acer Aspire 7738 to the nomux list

commit 9333caeaeae4f831054e0e127a6ed3948b604d3e upstream.

When KBC is in active multiplexing mode the touchpad on this laptop does
not work.

Reported-by: Bilal Koc <koc.bilo@googlemail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>