drm: add DRM_NOUVEAU_GEM_MAP/UNMAP

Add struct drm_nouveau_gem_map and struct drm_nouveau_gem_unmap, and the
corresponding ioctl opcodes DRM_NOUVEAU_GEM_MAP and DRM_NOUVEAU_GEM_UNMAP,
for supporting partial buffer mapping.

Change-Id: I696fe2ea6740c221c10caa27e6e7852447097720
Signed-off-by: Andrew Chew <achew@nvidia.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
1 file changed