[PATCH v2] drm/exynos: add iommu support for g2d

From: Inki Dae Chagelog v2: remove unnecessary structure, struct g2d_gem_node. Chagelog v1: This patch adds iommu support for g2d driver. For this, it adds subdrv_probe/remove callback to enable or disable g2d iommu. And with this patch, in case of using g2d iommu, we can get or put device addre

[PATCH v2] drm/exynos: add iommu support for g2d

From: Inki Dae Chagelog v2: remove unnecessary structure, struct g2d_gem_node. Chagelog v1: This patch adds iommu support for g2d driver. For this, it adds subdrv_probe/remove callback to enable or disable g2d iommu. And with this patch, in case of using g2d iommu, we can get or put device addre