omap: lpddr2_elpida: revert back to prior RAM timings
Revert "[WIP] 3.0.31"

This reverts commit 43ff935d41fcd8226979b25d199852d7fbcc2231.
Revert "revert some serial settings"

This reverts commit f55cb0987ec1b115e2e9052d4d6a5895e47a4ca1.