Using MPLed source for embedded system

Hi,

We are planning to use mozilla spidermonkey javascript engine for our
product that will be embedded/preloaded/downloaded on mobile phones.
(For this kind of software, the end user usually can't get any written
notification or document about the software.)

Since there is no ports yet, I think we should port spidermonkey onto
the devices and this may require changing some parts of MPLed source
code.

In this case, is it enough just posting the diffs from our web site or
is there anything we have to do according to MPL?

Thanks in advance.

walker