[WIP] Add support for Ampere EMAG8180 ARMV8 cpu

the fallbacks from Makefile.L1 assume a combined source for absolute value and non-absolute (with ifdef USE_ABS) but here we have separate implementations

the fallbacks from Makefile.L1 assume a combined source for absolute value and non-absolute (with ifdef USE_ABS) but here we have separate implementations

to fix utest failure in new ismin test -  Makefile.L1 defaults look wrong

The was a typo in iamax_sse.S where one of the comparison
was cmpeqps instead of cmpeqss. That misdetected index
for sequences where the minimum value was 0.

The leaq instructions in dscal_kernel_inc_8 modify x and x1 so they
must be declared as input/output constraints, otherwise the compiler
may assume the corresponding registers are not modified.

Improve paralleled SGEMM performance on SKYLAKEX CPUs

BTW some kernels were adjusted to improve performance

Fix SKYLAKEX STRMM issues

Optimize AVX2 SGEMM & STRMM

kernel/arm64/dgemm_beta.S: add beta == zero branch

added beta == zero branch, and no need to load C matrix.

Signed by: Xuqiang Chen <chenxuqiang3@hisilicon.com>

Use arm neon instructions to optimize sgemm_beta operation

[WIP] Use arm neon instructions to optimize tcopy operation

AVX2 ZGEMM3M kernel

prefetching for dgemm_beta

add in runtime cpu detection for zarch

modified:   KERNEL.ARMV8
	modified:   KERNEL.TSV110
	new file:   sgemm_ncopy_4.S