Bluetooth: Fix HCI_RESET command synchronization

Bluetooth: Fix HCI_RESET command synchronization

BugLink: http://bugs.launchpad.net/bugs/769042
BugLink: http://bugs.launchpad.net/bugs/700292

commit f630cf0d5434e3923e1b8226ffa2753ead6b0ce5 upstream.

We can't send new commands before a cmd_complete for the HCI_RESET command
shows up.

Reported-by: Mikko Vinni <mmvinni@yahoo.com>
Reported-by: Justin P. Mattock <justinmattock@gmail.com>
Reported-by: Ed Tomlinson <edt@aei.ca>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Tested-by: Justin P. Mattock <justinmattock@gmail.com>
Tested-by: Mikko Vinni <mmvinni@yahoo.com>
Tested-by: Ed Tomlinson <edt@aei.ca>
Signed-off-by: Leann Ogasawara <leann.ogasawara@canonical.com>