initial import of riscv port

[ct-clmsn]

Issue

#288

Verifies the driver atomics file; adds the directory rv64 and create-ethernet-map to complete riscv support.

Description

Adds in binary artifact for create-ethernet-map compiled from luwen (luwen-cem) - this is probably not acceptable for public download. It was compiled following @joelsmithTT 's notes to compile the binary.

List of the changes

adds in binary artifact for create-ethernet-map compiled from luwen (luwen-cem)

Testing

create-ethernet-map ran program using sifive unmatched hardware successfully

API Changes

N/A

[joelsmithTT]

Hi @ct-clmsn, thanks for the contribution.

UMD and Metal very recently changed how this binary is handled:
#245
tenstorrent/tt-metal#14718

Long story short: Metal doesn't need to know about it anymore, and UMD consumes it as a library rather than an executable.

This line controls how the build finds the library binary (lives here -- that folder contains instructions for how to build it for either the architecture of the host system or for aarch64).

[ct-clmsn]

@joelsmithTT I'm doing an update and build today to get my environment synchronized with this repository. Thanks!