ram: rk3399: Move mode_sel assignment

mode_sel assignment is based on dram type.

In phy_io_config, already have vref setting based
on the dram type, so move this mode_sel assignment
on vref setting area.

No functionality change.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Kever Yang <Kever.yang@rock-chips.com>
1 file changed