Merge "Add android_sdk_repo_host to build platform-tools&build-tools" am:...

Merge "Add android_sdk_repo_host to build platform-tools&build-tools" am: adf2b3e6 am: e89cd9f2 am: 57fbf573

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/1828170

Change-Id: I868e0130c5e0a4813aaf2c3397a3f8bc0342a4a7