[EFL] Fix build after r171454
https://bugs.webkit.org/show_bug.cgi?id=135191

Reviewed by Csaba Osztrogonác.

* MiniBrowser/efl/CMakeLists.txt: Add path to new EWebKit2.h location .


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@171470 268f45cc-cd09-0410-ab3c-d52691b4dbfc