ARM: dts: k2g-evm: Enable USB 0 and 1

Enable USB 0 which will be used as a host port and USB 1 which will be
used in peripheral mode.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com>
Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org>