Since Arachne Register Cell (ARC) is now final and stable,
automatically set rated DRAM frequency for T210B01 by default.
1866 MHz for old ones and 2133 MHz for newer ones.
Setting anything from 1600000 and lower will disable that.
- Fixed an issue where cached data would not be flushed after setting the fw carveout. Now they are flushed before setting it.
- Fixed and off-by-one bug and setting incorrect number of mtc entries.