Fixed syntax in AVX512 dgemm native kernel.
zen4 configuration follows Intel ASM syntax whereas other AMD configs
follow AT&T ASM syntax. Bug was introduced due to following AT&T syntax
in AVX512 dgemm kernel. In this commit we changed the syntax to Intel ASM
format. src and dst operands are interchanged.
Change-Id: Ie61dc7c5e8309b79437d471331318f3104bcd447