camera2: rename getConcurrentStreamingCameraIds() -> getConcurrentCameraIds()

Bug: 150896133

Test: builds
Test: atest ConcurrentCameraTest.java

Change-Id: I0634358ed2591448d2f69be329a524fe1a197813
Signed-off-by: Jayant Chowdhary <jchowdhary@google.com>
6 files changed