Fix failures for V1.0 vts suites on V1.1 service

In current implementations, the vts test for the overriden
V1_0::ISupplicantStaIface::registerCallback() method was failing.

This commit brings backward compatibility to have 1.0 vts suite
pass successfully.

Bug: 77310901
Test: VTS Test for both 1.0 and 1.1 suites

Change-Id: I1f2b239e642a8cc5761d68aa9d2b0b1b8b5dcb5a
Signed-off-by: Ahmed ElArabawy <arabawy@google.com>
3 files changed