Merge /home/v4l/v4l/patchwork

* /home/v4l/v4l/patchwork: (56 commits)
  [media] s5p-g2d: remove two unused variables from the G2D driver
  [media] uvcvideo: Fix integer overflow in uvc_ioctl_ctrl_map()
  [media] uvcvideo: Add UVC timestamps support
  [media] uvcvideo: Extract timestamp-related statistics
  [media] uvcvideo: Extract video stream statistics
  [media] uvcvideo: Add debugfs support
  [media] uvcvideo: Ignore GET_RES error for XU controls
  [media] uvcvideo: Don't skip erroneous payloads
  [media] uvcvideo: Make uvc_commit_video() static
  [media] uvcvideo: Add support for LogiLink Wireless Webcam
  [media] uvcvideo: Remove duplicate definitions of UVC_STREAM_* macros
  [media] uvcvideo: Handle uvc_init_video() failure in uvc_video_enable()
  [media] uvcvideo: Use videobuf2-vmalloc
  [media] uvcvideo: Move fields from uvc_buffer::buf to uvc_buffer
  [media] tm6000: Fix check for interrupt endpoint
  [media] tm6000: Fix bad indentation
  [media] tm6000: Fix fast USB access quirk
  [media] V4L: cosmetic clean up
  [media] gspca - zc3xx: Bad initialization of zc305/gc0303
  [media] gspca - topro: Lower the frame rate in 640x480 for the tp6800
  ...