rockchip: px30: add support for HW RNG for Odroid Go Advance
The Odroid Go Advance has a hardware random number generator present.
The device does not have an upstream Linux driver, but does have a
U-Boot driver. Add the appropriate node so that the hardware RNG can be
used in U-Boot.
Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>