Fix the GE2/1 e-links mapping for the GEB v2

Description

The title says it all: this MR aims at fixing the e-links mapping from the GE2/1 OH v1 to the GE1/1 OH v2.

Related Issue

How Has This Been Tested?

Pending confirmation and tests on a GE2/1 setup with an OH v2.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.