Do not overload mount-call - trying to reduce confusion

The behaviour of calling 'mount' differed depending on whether it called
the busybox-mount, the mount of util-linux, the mount defined in
/lib/functions.sh and /lib/functions/boot.sh

/etc/preinit even included /lib/functions.sh and /lib/functions/boot.sh,
both re-defining 'mount'.

SVN-Revision: 34792

target/linux/x86/xen_domu/base-files/lib/preinit/45_mount_xenfs

@@ -4,7 +4,7 @@
 do_mount_xenfs() {
 	[ -f /etc/modules.d/??-xenfs ] && {
 		insmod $(cat /etc/modules.d/??-xenfs)
-		mount none /proc/xen -t xenfs
+		mount -o noatime none /proc/xen -t xenfs
 	}
 }