Combine HOST/TARGET in Test Suite NOTICE.

This improved NOTICE bundling now includes TARGET_OUT deps that Android
Test Suites packages need, especially those for .apk files.

Bug: b/141258651
Test: $ make cts && \
        unzip -p out/host/linux-x86/cts/android-cts.zip \
        android-cts/NOTICE.txt \
        | less -N
Change-Id: I4c84d194ff5982fc57b6a8097602d4a9df68d61c