Bluetooth: hidp: use dest address from session info

While hid device unpair process, we are trying to access released
socket as apart of getting hci device which results a kernel panic.

CRs-fixed: 387164
Change-Id: I1f3f3f92cfd1d3b39793bc5a142001d5e26d76c4
Signed-off-by: Ram Mohan Korukonda <rkorukon@codeaurora.org>