[E3-hacking] Config / content filesystem

[Ralph Corderoy]

Hi Nick,

>  flash_erase /dev/mtd0 0 224
...
>  flash_erase /dev/mtd0 0 16

It always mtd0.  There's too much repetition in the code so errors like
this are likely to creep in.  Consider the approach I suggested in
https://www.earth.li/pipermail/e3-hacking/2019-April/001314.html
Then the `0' of mtd0, etc., it only typed once.

-- 
Cheers, Ralph.