Do not abort bonding if link disconnects during SDP after Auth cmplt

If ACL link gets dropped during service search after bonding,
re-attempt service search instead of setting bond state to BOND_NONE
Bug 8611134

Change-Id: I77672d9f4feab634b3795a41e0d4e58903b5d275
Merge branch 'jb-mr2-release' of https://android.googlesource.com/platform/external/bluetooth/bluedroid into jb-devel-mr2-release