Add DENSITY_140, DENSITY_180, DENSITY_200, DENSITY_220

This gives supported densities every 20dpi at the low end of densities,
which is where all current automotive screens sit.

BUG: 127714569
Test: None, just adding constants.

Change-Id: I6dd96493bf4474a55f22ce4ddbe27566d4ab9deb
2 files changed