BT: Close HCI before force kill BT process[3/3]

 - In Timeout cases forcefully killing BT process
   leads HAL daemon stuck in binder threads which
   results in spurious wake timeout.

 - This patch will close hci gracefully before
   killing BT process to avoid spurious wake timeouts.

CRs-Fixed: 2411254
Change-Id: I653c78a6a4ec6b141eb2e853c825c370fdac3f64
2 files changed