LOCAL HACK: tegra_defconfig changes

Signed-off-by: Stephen Warren <swarren@nvidia.com>
WIP: ARM: tegra: start work on Venice2 touchpad

Also added ISL light sensor to test I2C bus. Need to split this out
into a separate patch.

Import downstream driver from chromeos-3.10 so it initializes at all.

S-o-b: FIXME: a lot of downstream patches...
Signed-off-by: Stephen Warren <swarren@nvidia.com>
WIP: ARM: tegra: venice2 WiFi

Signed-off-by: Stephen Warren <swarren@nvidia.com>