Camera2: Fix error codes for CameraDevice.StateCallback.onError()

Existing code assumed that ICameraDeviceCallbacks and
CameraDevice.StateCallback have the same error code values for matching
errors.

They do not.

Also remove duplicate error code definitions now present in the AIDL
file for ICameraDeviceCallbacks.

Bug: 29248704
Change-Id: I069e2b7ef3be7887634e128f1accb50b7558f3fd