EVS: Android.bp -> Android.mk

EVS currently violates VNDK restrictions. Since it is in Soong,
this effects all targets. Temporarily converting it to make
until its dependencies are figured out so that we can enable
the VNDK on continuous integration only for Soong targets.

Test: links
Bug: 37426620
Change-Id: I9935ac764a4339bf8831ac720ab3de783c43f94f