Fix potential OOB vulnerability when an HCI event is received

* Check the minimum length of Hci Events to avoid OOB vulnerability

Bug: 142546104
Bug: 142546561
Bug: 142544089
Bug: 142638492
Bug: 142638392
Bug: 142544079
Bug: 142543497
Test: inject function, Bluetooth regression test PASS.
Change-Id: I761fc56dae45bd1fe24e55669adf6a9965717830