[POWER] Add small matrix for sgemm/dgemm on Power10

Big Endian Changes for Power10 kernels

When building for MIPS{64} little-endian variants, the included makefiles
should be the same as for the big-endian.

There are already some adjustments being done for some ARCH names.
This change adds the ones for the `mipsel` and `mips64el` names, so that
the Makefile.mips{64} files get included.

This comes as a result of: https://github.com/openwrt/packages/issues/16649

Signed-off-by: Alexandru Ardelean <ardeleanalex@gmail.com>

If no customized GEMM_SMALL_M_PERMIT kernel defined, it will just by pass to normal path.

make SMALL_MATRIX_OPT=1

Power10 fixes

1. Using core loongson3r3 and loongson3r4 for loongson
2. Add DYNAMIC_ARCH for loongson

Change-Id: I1c6b54dbeca3a0cc31d1222af36a7e9bd6ab54c1

allow setting soname without suffix or prefix

LDVERSIONGTEQ35 needs to escape the '>' character.

LDVERSIONGTEQ35 is checking the system ld version which may be different
to the toolchain being used to compile OpenBLAS. We don't have a path
to the linker in our Makefiles, so (ab)use gcc -Wl,--version to get the
version of ld in our toolchain.

Merge branch 'openblas-open-910' of git://github.com/damonyu1989/OpenBLAS into damonyu1989-openblas-open-910

Allows to create a library with a different
SONAME without the need to add suffixes to symbols
Backwards compatible and should have no effect
on the workflow and previous users.
Useful for allowing INTERFACE64 library alongside
the standard library without file conflicts

NO_EXPRECISION is disabled for the GENERIC_TARGET already, so prevent mixing with code parts that use a different float size by default

Add a missing macro which is required in Makefile.x86_64 due to recent
clearnup, which causes cooperlake platform build failure.