sparse complains about them:
drivers/char/drm/sis_ds.h:88:12: warning: dubious one-bit signed bitfield
drivers/char/drm/sis_ds.h:89:16: warning: dubious one-bit signed bitfield
Signed-off-by: Randy Dunlap <rddunlap@osdl.org>
Signed-off-by: Dave Airlie <airlied@linux.ie>