POWER10: QGEMM optimization (#10642)
* POWER10: QGEMM optimization
This patch makes use of POWER10 MMA feature for QGEMM function.
This optimization includes signed and unsigned cases.Tested and
there are no new failures with gcc11 and clang-14.
* Changes as per review comments
Co-authored-by: Rajalakshmi Srinivasaraghavan <rajis@linux.ibm.com>
