Added AVX512 optimized functions to calculate the
GF(2^8) vector dot product with 5 and 6 outputs
at a time. Also added GF(2^8) vector multiply
AVX512 optimized functions with 5 and 6 accumulate.
Change-Id: I6d2c080f4f4f8e4823ad9a9be2c65c3b5b3bb1f8
Signed-off-by: John Kariuki <John.K.Kariuki@intel.com>