tegra124: Allow setting PLLM (clock for SDRAM).

The new clock_sdram(...) initialized PLLM by given configuration (which needs to
be explicitly determined, usually from BCT or SDRAM parameters).

BUG=none
TEST=emerge-nyan chromeos-coreoot-nyan
     # With other patches, the new function starts PLLM in correct clock.

Change-Id: I606d0506c734d312db9e1b72a910700ca766f2d3
Reviewed-on: https://chromium-review.googlesource.com/183621
Tested-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Commit-Queue: Hung-Te Lin <hungte@chromium.org>
3 files changed