Newer ideapads support a new mic hotkey implemented via an ACPI
interface. This patch converts the mic mute event to a keycode
KEY_MICMUTE.
Signed-off-by: NAlex Hung <alex.hung@canonical.com>
Acked-by: NIke Panhc <ike.pan@canonical.com>
Signed-off-by: NDarren Hart <dvhart@linux.intel.com>