and here is the problem with yours, from the EULA:

     Subject to the terms of this Agreement, Licensor hereby grants to
     You, free of charge, a non-exclusive, non-sublicensable,
     non-transferable, limited copyright license, during the term of
     this Agreement, to download, install and use the Software
     internally in machine-readable (i.e., object code) form and the
     Documentation for non-commercial use on an Authorized Android
     Enabled Device and non-commercial redistribution for academic
     purposes only of a reasonable number of copies of the Authorized
     Android Enabled Device Software (the "Limited Purpose"). You may
     grant your end users the right to use the Software for
     non-commercial purposes on an Authorized Android Enabled Device.
     The license to the Software granted to You hereunder is solely for
     the Limited Purpose set forth in this section, and the Software

This makes it entirely impossible for AOSP to distribute the drivers