The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.
Discussed with: pfg
MFC After: 3 days
Sponsored by: Netflix
This is the MVP required to initialise and consume random data from
the QCA PRNG hardware found on the IPQ401x.
Reviewed by: andrew, manu, imp
Differential Revision: https://reviews.freebsd.org/D32723