drm/exynos: remove EXYNOS_BO_NONCONTIG type checking.

With iommu support, non-continuous buffer also is supported so
this patch removes these checking from exynos_drm_gem_get/put_dma_addr
funciton.

This patch is based on the below patch set, "drm/exynos: add
iommu support for -next".
	http://www.spinics.net/lists/dri-devel/msg29041.htmlSigned-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

drivers/gpu/drm/exynos/exynos_drm_gem.c

@@ -281,14 +281,6 @@ dma_addr_t *exynos_drm_gem_get_dma_addr(struct drm_device *dev,
 
 	exynos_gem_obj = to_exynos_gem_obj(obj);
 
-	if (exynos_gem_obj->flags & EXYNOS_BO_NONCONTIG) {
-		DRM_DEBUG_KMS("not support NONCONTIG type.\n");
-		drm_gem_object_unreference_unlocked(obj);
-
-		/* TODO */
-		return ERR_PTR(-EINVAL);
-	}
-
 	return &exynos_gem_obj->buffer->dma_addr;
 }
 
@@ -307,14 +299,6 @@ void exynos_drm_gem_put_dma_addr(struct drm_device *dev,
 
 	exynos_gem_obj = to_exynos_gem_obj(obj);
 
-	if (exynos_gem_obj->flags & EXYNOS_BO_NONCONTIG) {
-		DRM_DEBUG_KMS("not support NONCONTIG type.\n");
-		drm_gem_object_unreference_unlocked(obj);
-
-		/* TODO */
-		return;
-	}
-
 	drm_gem_object_unreference_unlocked(obj);
 
 	/*