Scale screen recording according to display size.

Screen recordings should not be hardcoded to 720x1280 as this may
enforce an incorrect orientation/aspect ratio on the virtual display
that does not correspond to the physical display.

Fixes: 406437257
Test: atest FlickerLibTest

Change-Id: I55857cee1feaf7f3610ee9291cf81643739b0e4f
2 files changed