Use extended set scan enable/parameters when available

When LE Advertising Extension is available on the controller we must use
both extended advertising and scanning commands. Otherwise, according to
the spec, controller will return error.

This patch makes sure that proper avaliable HCI calls are made.

Bug: 30622771
Test: sl4a ConcurrentBleAdvertisingTest as scanner
Change-Id: I6906c381f0f758bd24b592390a4ef46e7fae36ed