ARM: dts: exynos: disable pull up of USB 3.0 over-current on Odroid XU

The Odroid XU has external pull ups for USB 3.0 over-current pins, so
disable the internal one.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20201015182044.480562-4-krzk@kernel.org


Tested-by: Gabriel Ribba Esteva <gabriel.ribbae@gmail.com>