Having consistent import order will reduce chance of merge
conflict between internal and external master
Test: rebuild
Change-Id: I0b1a170967ddcce7f388603fd521f6ed1eeba30b
Screen now handles data role and power
role switching as separate categories.
Change the UsbBackend api to use predefined
constants. Split out data and power direction
changes into separate functions.
Add tests for new controllers and new backend
functionality.
Bug: 72829348
Test: passes
Change-Id: I28b96cf49463fa4f3a4b6be41c57d5841731fbd6
