drm/vmwgfx: Adapt capability reporting to new hardware version

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Zack Rusin <zackr@vmware.com>

Conflicts:
	drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c