Move wayland support from default build

Wayland trace files are not available in AOSP so building Winscope will
break. Instead, pick up stub files by default and provide an option via
env args to pick up Wayland support.

Also removes obsolete protolog stubs which are no longer needed.

Test: Remove wayland trace from path and check if winscope still builds
Test: Build winscope with WAYLAND=true and confirm it pick up waylandproto file

Fixes: 151239942
Change-Id: Ie5b237725cd656c478a2ea99d469963956399714
6 files changed