[rocm-libraries] ROCm/rocm-libraries#7543 (commit 2b735ff)

Fix for #6207 (#7543)

## Motivation

PR #6207 introduces an error. This PR is the fix of it.

## Technical Details
Adds a path for GFX1250 in `to_string`

## Test Plan

Test has already included.

## Test Result

Test should pass.

## Submission Checklist

- [x] Look over the contributing guidelines at
https://github.com/ROCm/ROCm/blob/develop/CONTRIBUTING.md#pull-requests.