Add empty version of l2x0_of_init for when CONFIG_CACHE_L2X0 is not selected.
Signed-off-by: NRob Herring <rob.herring@calxeda.com>
Acked-by: NBarry Song <21cnbao@gmail.com>
Reviewed-by: NShawn Guo <shawn.guo@linaro.org>