ARM: tegra_defconfig: Enable drivers wanted by Acer Chromebooks and ASUS tablets

Enable charger, touchpad  and EC drivers found on Acer Tegra124 (Nyan)
Chromebooks, display bridge found on ASUS TF700T and audio codecs
found on ASUS tablets.

Suggested-by: Thomas Graichen <thomas.graichen@gmail.com> # Nyan options
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>