[EFL] Fix the gst-libav build on ARM Thumb2
https://bugs.webkit.org/show_bug.cgi?id=137022

Reviewed by Zoltan Herczeg.

* efl/jhbuild.modules:
* efl/patches/gst-libav.patch: Added.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@174005 268f45cc-cd09-0410-ab3c-d52691b4dbfc