Camera: add static assertion for camera_metadata

Make sure no one updates these structs in the future.
Treble will allow framework and HAL targeting different
copy of libcamera_metadata, so make sure we don't update
these structs and cause mismatch.

Test: compile (as this is static check)
Bug: 37287148
Change-Id: Ibfc6d710e97e276a9d7eea1ceee1736f75f9a056
2 files changed