ARM: dts: rockchip: Assign the proper GPIO clocks for rv1108

It is not correct to assign the 24MHz clock oscillator to the GPIO
ports.

Fix it by assigning the proper GPIO clocks instead.

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Tested-by: Fabio Berton <fabio.berton@ossystems.com.br>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>