evas: add PACKAGECONFIG for harfbuzz

* harfbuzz is autodetected and can cause even edje_cc to fail,
  this if from cpu.bb build:
  | sysroots/x86_64-linux/usr/bin/edje_cc:
    error while loading shared libraries: libharfbuzz.so.0: cannot open
    shared object file: No such file or directory
  | make[2]: *** [e-module-cpu.edj] Error 127

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>