Merge /home/v4l/v4l/patchwork

* /home/v4l/v4l/patchwork: (1587 commits)
  [media] media: dmxdev: remove dvb_ringbuffer_flush() on writer side
  [media] em28xx: remove GPIO register caching
  [media] em28xx: move snapshot button bit definition for reg 0x0C from em28xx-input.c to em28xx.h
  [media] em28xx: improve em2820-em2873/83 GPIO port register definitions and descriptions
  [media] em28xx: extend GPIO register definitions for the em25xx, em276x/7x/8x, em2874/174/84
  [media] mxl111sf: don't redefine pr_err/info/debug
  [media] r820t: fix imr calibration
  [media] r820t: avoid potential memcpy buffer overflow in shadow_store()
  [media] r820t: remove redundant initializations in r820t_attach()
  [media] V4L: Remove all links of the media entity when unregistering subdev
  [media] media: Add a function removing all links of a media entity
  [media] smiapp: Clean up media entity after unregistering subdev
  [media] davinci_vpfe: Clean up media entity after unregistering subdev
  [media] staging/media: lirc_imon: fix leaks in imon_probe()
  [media] pvrusb2: Cocci spatch "memdup.spatch"
  [media] drivers/media/pci/mantis/mantis_cards: Convert to module_pci_driver
  [media] drivers/media/pci/pluto2/pluto2: Convert to module_pci_driver
  [media] drivers/media/pci/dm1105/dm1105: Convert to module_pci_driver
  [media] drivers/media/pci/mantis/hopper_cards: Convert to module_pci_driver
  [media] drivers/media/pci/dm1105/dm1105: Convert to module_pci_driver
  ...