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/brcm47xx/base-files/lib/preinit/15_mount_proc_brcm

@@ -1,5 +1,5 @@
 #!/bin/sh
 
 do_mount_procfs() {
-	mount none /proc -t proc
+	mount -o noatime none /proc -t proc
 }