ARM: imx: use imx specific L2 init function on imx6sl
ARM: imx: use imx specific L2 init function on imx6sl

The optimized L2 prefect and power setting done in imx_init_l2cache()
can also benefit imx6sl, so let's call the function on imx6sl as well.

Signed-off-by: Shawn Guo <912cf7eb7d8018e2943586ae6657d21fd4e38239@linaro.org>
Acked-by: Dirk Behme <65191830245723325aed938dddb6d81810e13fc4@de.bosch.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs