arm64: defconfig: Enable typec-phy and extcon-usbc-cros-ec for rk3399

Enables typec phyter and extcon driver for cable detection that is used by
USB 3.0 controller for Rockchip rk3399 SoCs.

Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Tested-by: Alexandre Courbot <acourbot@chromium.org>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>