ARM: tegra: enable new drivers in defconfig

Enable new platforms and tegra drivers in tegra_defconfig. Also enable
some of the common devices several platforms, and GUID partition tables
to make it possible to boot a tegra_defconfig kernel with a ChromiumOS
filesystem.

Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Stephen Warren <swarren@nvidia.com>