fix(dracut): pipe hardlink output to dinfo

Otherwise the output is cluttered with:
```
Mode:           real
Files:          1364
Linked:         5 files
Compared:       0 xattrs
Compared:       384 files
Saved:          12.84 KiB
Duration:       0.052674 seconds
```

dracut.sh

@@ -2092,7 +2092,7 @@ done
 
 if [[ $do_hardlink == yes ]] && command -v hardlink > /dev/null; then
     dinfo "*** Hardlinking files ***"
-    hardlink "$initdir" 2>&1
+    hardlink "$initdir" 2>&1 | dinfo
     dinfo "*** Hardlinking files done ***"
 fi