hwui: Add libGLESv3 to the list of shared_libs

hwui tests are using symbols from libGLESv3 byt rely on the fact
that they used to be exported by libGLESv2. It used to rely on
the fact that libGLESv3.so was a symlink to libGLESv2.so which
is no longer the case.

Bug: http://b/69603741
Test: make
Change-Id: I769f1fa79e364ae87d01c07f6a3976200e8722a2