CMake: Pass `OpenMP` compiler and linker flags through CMake targets

spelling error where zsum_kernel is used and it should be zasum_kernel. Will not compile without fix.

On z-series, the current version of the GNU toolchain produces warnings
such as:
```
/usr/lib64/gcc/[...]/s390x-suse-linux/bin/ld: warning: ztrmm_kernel_RC_Z14.o: missing .note.GNU-stack section implies
executable stack
/usr/lib64/[...]/s390x-suse-linux/bin/ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
```
To prevent this message and make sure we are future proof, add
```
	.section        .note.GNU-stack,"",@progbits
```
Also add the `.size` bit to give the asm defined functions a proper size
in the symbol table.

Signed-off-by: Egbert Eich <eich@suse.com>

Using `OpenMP::OpenMP_LANG` targets for CMake is less error-prone than
passing the compiler and linker flags manually. Furthermore, it allows
the user to customize those flags by setting `OpenMP_LANG_FLAGS`,
`OpenMP_LANG_LIB_NAMES`, and `OpenMP_omp_LIBRARY`.

Optimize aarch64 sgemm_ncopy

replace customize bf16_to_fp32 with arm neon vcvtah_f32_bf16

Optimize gemv_n_sve kernel

Add dispatch of SBGEMVNKERNEL for NEOVERSEN2 and NEOVERSEV2

This improves performance for sbgemv_t by up to 100x on NEOVERSEV1.
The geometric mean speedup is ~61x for M=N=[2,512].

Support for SGEMM_DIRECT Kernel based on SME1

* Added ARMV9SME target
* Added SGEMM_DIRECT kernel based on SME1

LoongArch64: Fixed lapack test for LA264

When the data type is single-precision real or single-precision complex,
converting it to double precision does not prevent overflow (as exposed in LAPACK tests).
The only solution is to follow C's approach: find the maximum value in the
array and divide each element by that maximum to avoid this issue

Fixed the error when the stride is zero

Do not check whether the input parameters c and s are zero,
as this may cause errors with special values (same as scal).
Although OpenBLAS's own test suite doesn't catch this, it will
cause LAPACK test cases to fail.

Fixed incorrect store operation

Signed-off-by: gxw <guxiwei-hf@loongson.cn>

Fixed index retrieval issue when there are
identical maximum absolute values

Signed-off-by: Hao Chen <chenhao@loongson.cn>
Signed-off-by: gxw <guxiwei-hf@loongson.cn>

Fixed incorrect register usage in instructions

Signed-off-by: gxw <guxiwei-hf@loongson.cn>

Fixed register zeroing operation

Signed-off-by: Hao Chen <chenhao@loongson.cn>
Signed-off-by: gxw <guxiwei-hf@loongson.cn>

Signed-off-by: Ye Tao <ye.tao@arm.com>

Small gemm kernel improvements for AArch64

Further rearranged the rotm kernel for the different architectures.

Signed-off-by: tingbo.liao <tingbo.liao@starfivetech.com>

* Protect align directives in assembly files that are currently problematic with LLVM on WoA

* use the armv8 zdot on WoA to work around other LLVM issues

Signed-off-by: tingbo.liao <tingbo.liao@starfivetech.com>