ANDROID: GKI: Enable V4L2 hidden configs

V4L2 is disabled by default, enable common features.

23 Added functions:

  void vb2_buffer_done(vb2_buffer*, vb2_buffer_state)
  int vb2_dqbuf(vb2_queue*, v4l2_buffer*, bool)
  int vb2_fop_mmap(file*, vm_area_struct*)
  __poll_t vb2_fop_poll(file*, poll_table*)
  ssize_t vb2_fop_read(file*, char*, size_t, loff_t*)
  int vb2_fop_release(file*)
  int vb2_ioctl_create_bufs(file*, void*, v4l2_create_buffers*)
  int vb2_ioctl_dqbuf(file*, void*, v4l2_buffer*)
  int vb2_ioctl_expbuf(file*, void*, v4l2_exportbuffer*)
  int vb2_ioctl_qbuf(file*, void*, v4l2_buffer*)
  int vb2_ioctl_querybuf(file*, void*, v4l2_buffer*)
  int vb2_ioctl_reqbufs(file*, void*, v4l2_requestbuffers*)
  int vb2_ioctl_streamoff(file*, void*, v4l2_buf_type)
  int vb2_ioctl_streamon(file*, void*, v4l2_buf_type)
  void vb2_ops_wait_finish(vb2_queue*)
  void vb2_ops_wait_prepare(vb2_queue*)
  void* vb2_plane_vaddr(vb2_buffer*, unsigned int)
  int vb2_qbuf(vb2_queue*, v4l2_buffer*)
  int vb2_queue_init(vb2_queue*)
  void vb2_queue_release(vb2_queue*)
  int vb2_reqbufs(vb2_queue*, v4l2_requestbuffers*)
  int vb2_streamoff(vb2_queue*, v4l2_buf_type)
  int vb2_streamon(vb2_queue*, v4l2_buf_type)

Signed-off-by: Mark Salyzyn <salyzyn@google.com>
Bug: 151246806
Test: abi check, confirm the various vb2_* functions are now available
Change-Id: I6e20c12c645fd45801b24f922c66508b667ea371