Android 12.1.0 release 19
Fix DPI handling after hwcomposer 2.4 update

aosp/1843498 accidently dropped the factor of 1000 that was applied
in Display::init(). Instead, move the factor of 1000 to DisplayConfig
and document the factor better.

Bug: b/201578179
Bug: b/202358218
Test: `launch_cvd` and inspect DPI
Change-Id: I40fb96900ea864497eee093049b8b707e6991298
Merged-In: I40fb96900ea864497eee093049b8b707e6991298
3 files changed