Fix the build on embedded linux

This patch:
    - adds required options to the embedded_linux.pri config
    - adds missing events_ozone.gyp:events_ozone_evdev dependency
    - fixes pkg-config not to pick host paths when cross compiling
    - implements missing functions of the OzonePlatform interface
    - updates the submodule to include fixes for chromium

Change-Id: I77b384738fa7d41938a68c10a007728b10d7db28
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@theqtcompany.com>