arm: dts: rockchip: add some common pin-settings to rk3399

arm: dts: rockchip: add some common pin-settings to rk3399

Those pins would be used by many boards.

Commit grabbed from Linux:

commit b41023282d07b61a53e2c9b9508912b1e7ce7b4f
Author: Randy Li <[email protected]>
Date:   Thu Jun 21 21:32:10 2018 +0800

    arm64: dts: rockchip: add some common pin-settings to rk3399

    Those pins would be used by many boards.

    Signed-off-by: Randy Li <[email protected]>
    Signed-off-by: Heiko Stuebner <[email protected]>
Acked-by: Philipp Tomsich <[email protected]>
Signed-off-by: Randy Li <[email protected]>
Signed-off-by: Heiko Stuebner <[email protected]>
Signed-off-by: Ezequiel Garcia <[email protected]>
Tested-by: Peter Robinson <[email protected]>
Reviewed-by: Philipp Tomsich <[email protected]>