
In commit[1], we allowed to specify permission to be applied to TFTP directories using ``[pxe]/dir_permission``. This configuration is an integer value. This patch adds a note stating that this value should be an octal number. [1] 0f7a85e1ecd7b3e7bdbc297f47a498139ed40107 Change-Id: Iba8d88bd6faba600d6b66d27f1700dae8dd29eee