Revert "remove LinearTransform from libutils"

This reverts commit d4d6167f614a9001d9827a8634a26b5e9445a22c.

Bug: 36206160
Test:  Fugu compiles, didn't before the revert
Change-Id: I2b0d3a05546ee2605555a9aa7ae028f2baeaf439
6 files changed