add LIB_DEPENDS= libv4l2 to www/firefox/Makefile (fwd)

[Julian H. Stacey]

Re my:
> Hi gecko at freebsd.org,
> I forgot to cc you this send-pr

From: FreeBSD-gnats-submit at FreeBSD.org
> It has the internal identification `ports/186174'.
> The individual assigned to look at your
> report is: freebsd-ports-bugs. 
> 
> http://www.freebsd.org/cgi/query-pr.cgi?pr=186174

Cheers,
Julian
-- 
Julian Stacey, BSD Unix Linux C Sys Eng Consultant, Munich http://berklix.com
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