dracut: Always add chgrp to initrd

nvidia driver needs this via modprobe script.
Needs to do change the group after a device node got created.
Add chown instead of chgrp which can also change the owner of a file.

Ask Stefand Dirsch <sndirsch@suse.de> for details.

Signed-off-by: Thomas Renninger <trenn@suse.de>

Index: dracut-037/modules.d/99base/module-setup.sh
===================================================================
--- dracut-037.orig/modules.d/99base/module-setup.sh
+++ dracut-037/modules.d/99base/module-setup.sh
@@ -17,7 +17,7 @@ depends() {
 install() {
     local _d
 
-    inst_multiple mount mknod mkdir sleep chroot \
+    inst_multiple mount mknod mkdir sleep chroot chgrp \
         sed ls flock cp mv dmesg rm ln rmmod mkfifo umount readlink setsid
     inst $(command -v modprobe) /sbin/modprobe