freebl: POWER poly1305 mac vector acceleration

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:72.0) Gecko/20100101 Firefox/72.0 Expected results: Would like to reach community to help improve the performance of Poly1305 using POWER8 and POWER9 ISA enhancements, and to provide proof that achieved performance of Poly1305 is close to optimal for the platform (i.e matching or beating OpenSSL performance *) Optimized assembly implementations in the Cryptogams repository [1] may serve as useful reference. C-based intrinsic implementations are also acceptable given prior conditions (*). Financial bounty upon completion, community acceptance of patches, and reviewer input. Moreover, free access to a ppc64le VM or direct Jenkins CI account can be obtained at OSU Open Source Lab: https://osuosl.org/services/powerdev/ You can list me (johnjmar@linux.vnet.ibm.com) as the IBM Advocate. [1] https://github.com/dot-asm/cryptogams/