Tegra210's pinmux supports a different set of pins/options than earlier
SoCs, so requires its own driver (well, table of pin-specific data).

Cc: devicetree@vger.kernel.org
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Tested-by: NAlexandre Courbot <acourbot@nvidia.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>