HOGP: Update status to OK, if link is already encrypted

Usecase:
1) Connect to HOGP device. (Because of some condition encryption fails with Connection
   Timeout, remote device turned off when connection was initiated)
2) Try to connect again to HoGP device

Expected Result:
Connection should be successful

Observed Result:
UI stuck in connecting state and connection never succeeds.

Root cause:
When encryption fails in previous iteration, encryption happens before HoGP Server starts
security procedure, leading to Encryption Complete event being received with wrong status.

Fix:
Update the status to success when sending encryption complete event if link is already
encrypted

Test: Issue is not seen after above steps

Fixes: 76133015
Change-Id: Ib404cf157289170ea300eae40f51393606c35105