[PATCH 0/2] Disable AMX-TRANSPOSE by default

[Haochen Jiang]

Hi all,

There are some concerns to directly remove the AMX-TRANSPOSE
support from Binutils. Therefore, instead of removing that,
we will keep the support there but not enable it by default
since no HW will support that in foreseeable future. If any
vendors support that on HW, they could simply enable the feature.

This means we also need to re-do the AMX-TRANSPOSE APX removal
part since the reason to do that is actually the removal of
AMX-TRANSPOSE from documentation eventually.

I also megre all the AMX-TRANSPOSE testcases into one file, where
some of them are in pieces in other files. When we would like
to re-enable the feature, we only need to adjust AMX-TRANSPOSE
testcase.

Discussions are welcomed. Tested on x86-64-linux-gnu. Ok for trunk?

Thx,
Haochen