CS_BAD_TYPE was only used in cs.c and already properly annotated by error
messages. CS_BAD_ATTRIBUTE and CS_BAD_PAGE mean a badly written driver, so
ds_dbg() output and -EINVAL seems to be enough.

(includes bugfix from and
Signed-off-by: NHarvey Harrison <harvey.harrison@gmail.com>
)
Signed-off-by: NDominik Brodowski <linux@dominikbrodowski.net>