Changed comparator to better handle edge case.

Changed -eq 15 to be -ge 15 per Marc.  

This will catch situations where someone fails to update both duplicates at the same time.

test-case/check-kmod-load-unload-after-playback.sh

@@ -86,7 +86,7 @@ do
             dlogi "platform doesn't support runtime pm, skip waiting" && break
         [[ $(sof-dump-status.py --dsp_status 0) == "suspended" ]] && break
         sleep 1
-        if [ "$i" -eq 15 ]; then
+        if [ "$i" -ge 15 ]; then
             die "dsp is not suspended after 15s, end test"
         fi
     done