Added HFLOAT16 support for RISCV64
Added shgemm_kernel_8x8 for RISCV64_ZVL128B and shgemm_kernel_16x8 for RISCV64_ZVL256B based on HFLOAT16
The instruction sets used are ZVFH and ZFH, which need to be supported by RVV1.0

Related to issue #5279
Co-authored-by Linjin Li <linjin_li@163.com>

* Fixed bugs in dgemm, [a]min\max, asum kernels
* Added zero checks for BLAS kernels
* Added dsdot implementation for RVV 0.7.1
* Fixed bugs in _vector files for C910V and RISCV64_ZVL256B targets
* Added additional definitions for RISCV64_ZVL256B target

Current RVV x280 target depends on vlen=512-bits for Level 3 operations.
Commit adds generic target that supports vlen=128-bits.
New target uses the same scalable kernels as x280 for Level 1&2 operations, and autogenerated kernels for Level 3 operations.
Functional correctness of Level 3 operations tested on vlen=128-bits using QEMU v8.1.1 for ctests and BLAS-Tester.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>

- config.h was used as target even when it wasn't generated.
  This only worked because the 'dummy' target always triggers
  a full rebuild.
  It is however better to specify the exact target that is to
  be rebuilt do avoid confusion.
- Explicitly mark 'dummy' as a 'phony' target.

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

Hard-coding gcc may not provide incorrect results when a different compiler
for the target build is used. To remain in sync with the main call to c_check,
pass the full command line.

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

Change-Id: Iae7800a32f5af3903c330882cdf6f292d885f266

Signed-off-by: Shivraj Patil <shivraj.patil@imgtec.com>

Signed-off-by: Shivraj Patil <shivraj.patil@imgtec.com>

a fortran compiler, please try make ONLY_CBLAS=1.

This mode only compiler CBLAS without BLAS fortran interface and LAPACK.

Thank Dan Povey's patch. https://github.com/xianyi/OpenBLAS/issues/187

The 'const' modifications were done automatically using this scripts:
https://kaldi.svn.sourceforge.net/svnroot/kaldi/sandbox/dan/tools/for_openblas