[u-boot-fslc] enable d-cache in SPL for i.MX6

Hello,

Has anybody succeeded to enable d-cache in SPL for imx6 (SOLO/DUAL) chip?

I am using u-boot-fslc 2018.11. I found one patch which enables d-cache for omap chip, but similar approach did not work for me. The omap patch: https://lists.denx.de/pipermail/u-boot/2016-November/274325.html

Best regards, Asfak