feat(openr): Update Open/R source reference

[MatthewWEdwards]

Prerequisites

• [x] I have read the Contributing Guidelines.
• [x] I have read the Code of Conduct.
• [x] If this is a non-trivial change, I have already opened an accompanying Issue.
• [x] If applicable, I have included documentation updates alongside my code changes.

Description

The changes in fix-platform-linux-handler.patch have been pushed to the tg-M80.1 branch in the Open/R repository, Update SRC_URI to use that revision.

Test Plan

bitbake openr