Revert "Revert "Rename IUsdInterface to IStaInterface in the Mai..."

Revert submission 32132699-revert-32029057-mainline-supplicant-generalize-iface-type-NJLGVJHNTR

Reason for revert: Located the root cause of the build failure

Reverted changes: /q/submissionid:32132699-revert-32029057-mainline-supplicant-generalize-iface-type-NJLGVJHNTR

Change-Id: I9ccfc5823a353ab19cffc548aa97a8ca5aef2298
5 files changed