Replace android::dvr::BufferHubDefs with android::BufferHubDefs

New libraries in libui and bufferhub shall be using
android::BufferHubDefs instead of android::dvr::BufferHubDefs.

Bug: None
Test: atest AHardwareBufferTest BufferHubBuffer_test
BufferHubMetadata_test buffer_hub_queue_producer-test libgui_test
libsensor_test vrflinger_test buffer_hub-test buffer_hub_queue-test
dvr_buffer_queue-test dvr_api-test dvr_display-test
Test: in libui_test InputSurfacesTest are segfault on top of master already.

tested on Blueline and Vega

Change-Id: Ia755022c96147969a401ed32544082a8c76936a0