ARM: dts: rockchip: set correct dwc2 params for cortex-a9 socs

According to the manual, the fifo sizes are the same as on later socs
like the rk3288 and this also fixes an error about "insufficient fifo
memory", as it seems the values read from the ip are wrong.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>