Pull media updates from Mauro Carvalho Chehab:

 - remove of atomisp driver from staging, as nobody would have time to
   dedicate huge efforts to fix all the problems there. Also, we have a
   feeling that the driver may not even run the way it is.

 - move Zoran driver to staging, in order to be either fixed to use VB2
   and the proper media kAPIs or to be removed

 - remove videobuf-dvb driver, with is unused for a while

 - some V4L2 documentation fixes/improvements

 - new sensor drivers: imx258 and ov7251

 - a new driver was added to allow using I2C transparent drivers

 - several improvements at the ddbridge driver

 - several improvements at the ISDB pt1 driver, making it more coherent
   with the DVB framework

 - added a new platform driver for MIPI CSI-2 RX: cadence

 - now, all media drivers can be compiled on x86 with COMPILE_TEST

 - almost all media drivers now build on non-x86 architectures with
   COMPILE_TEST

 - lots of other random stuff: cleanups, support for new board models,
   bug fixes, etc

* tag 'media/v4.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (464 commits)
  media: omap2: fix compile-testing with FB_OMAP2=m
  media: media/radio/Kconfig: add back RADIO_ISA
  media: v4l2-ioctl.c: fix missing unlock in __video_do_ioctl()
  media: pxa_camera: ignore -ENOIOCTLCMD from v4l2_subdev_call for s_power
  media: arch: sh: migor: Fix TW9910 PDN gpio
  media: staging: tegra-vde: Reset VDE regardless of memory client resetting failure
  media: marvel-ccic: mmp: select VIDEOBUF2_VMALLOC/DMA_CONTIG
  media: marvel-ccic: allow ccic and mmp drivers to coexist
  media: uvcvideo: Prevent setting unavailable flags
  media: ddbridge: conditionally enable fast TS for stv0910-equipped bridges
  media: dvb-frontends/stv0910: make TS speed configurable
  media: ddbridge/mci: add identifiers to function definition arguments
  media: ddbridge/mci: protect against out-of-bounds array access in stop()
  media: rc: ensure input/lirc device can be opened after register
  media: rc: nuvoton: Keep device enabled during reg init
  media: rc: nuvoton: Keep track of users on CIR enable/disable
  media: rc: nuvoton: Tweak the interrupt enabling dance
  media: uvcvideo: Support realtek's UVC 1.5 device
  media: uvcvideo: Fix driver reference counting
  media: gspca_zc3xx: Enable short exposure times for OV7648
  ...