Merge branch 'topic-0620/samsung-gscalar-3.4' into chromeos-exynos-3.4

Merge branch 'topic-0620/samsung-gscalar-3.4' into chromeos-exynos-3.4

* topic-0620/samsung-gscalar-3.4:
  Add V4L2_CID macros for GScaler custom control
  media: gscalar: Fix build warnings due to possible uninitialized usage
  ARM: EXYNOS: GSCALAR: Add IOMMU mapping to GSC probe
  Media: Exynos: Add VB2 modifications for G-Scalar driver
  Media: Exynos: Header file support for G-Scaler driver
  include: mdev: Add driver_put and module_name_to_driver_data
  media: exynos: Fix Tiled format in Gscalar
  media: exynos: gscaler: Don't register Gscaler capture device
  media: exynos: Add new formats in gscalar driver
  media: gscaler: Add new driver for general scaler
  UPSTREAM: media: media-dev: Add media devices for EXYNOS5