Export soong docs

Copy soong_build.html to DIST_DIR so that we have somewhere to get an
up-to-date copy of the docs.

Change-Id: I610cc75c2508ee48b7b372d268c75cd6c4bf4f63
1 file changed
tree: b4d30f0f26c27c73171cbdb1946baa177510ac1c
  1. build-prebuilts.sh
  2. darwin-x86/
  3. linux-x86/