dgemv_kernel_4x4(Haswell): add missing clobbers for xmm0,xmm1,xmm2,xmm3
dgemv_kernel_4x4(Haswell): add missing clobbers for xmm0,xmm1,xmm2,xmm3

This fixes a crash in dblat2 when OpenBLAS is compiled using
-march=znver1 -ftree-vectorize -O2

See also:
https://github.com/easybuilders/easybuild-easyconfigs/issues/7180

xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS