Add enet ref/timer/PHY_REF/root clk which are required to make enet function well. Signed-off-by: Peng Fan <peng.fan@nxp.com> Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de> Tested-by: Frieder Schrempf <frieder.schrempf@kontron.de>