dcache: fix a couple of small issues
dcache: fix a couple of small issues

alvieboy/xtc-base,alvieboy/xtc-base,alvieboy/xtc-base,alvieboy/xtc-base,alvieboy/xtc-base,alvieboy/xtc-base,alvieboy/xtc-base,alvieboy/xtc-base,alvieboy/xtc-base