Refactor InputController into PeripheralController.

Rename the InputController and related class to PeripheralController,
and rename MiscDevice to AssociatedDevice to better reflect the behavior
of these hardwares.

Bug: 13831915
Test: atest inputflinger_tests
Change-Id: Ib61f7f6cc4fe616d08afc29bf1f1e08c1c9f565d