Add fixed rotation display adjustments

If an activity is launched with fixed rotation transform,
its window layout and configuration will be rotated. But
if it gets real information from the display, the values
(getRotation, getRealSize, getRealMetric, getCutout) are
inconsistent with the actual appearance.

This change provides the basic information to adjust the
returned values.

Bug: 147213487
Test: atest DisplayAdjustmentsTests#testFixedRotationAdjustments
Change-Id: I864d5759f41209d5f93c4a9011b720675c25e765