btaa: HCI LE and special event process

Implementation the HCI process for LE and special (events that contains
more than one device information) events.

Tag: #feature
Bug: 177230507
Test: verified locally BTAA can process LE and special events.
BYPASS_LONG_LINES_REASON: consist with gd format

Change-Id: If30069673bd6164b22af926ca17ea9830f891a8a