alarm/firmware-brcm43xx: Generate semi-random MAC address and make service conf optional

Prevents MAC conflicts when settings up multiple systems at the same time.
alarm/firmware-brcm43xx: Search harder for chip version

* Fixes finding chip on wandboard (mmc1) and possibly other devices
* Gracefully fail if a chip is not found.
alarm/firmware-brcm43xx: Support for Wandboard

Instead of hard coding the TTY, guess it or use whatever is defined in the conf file.
alarm/firmware-bcrm43xx: Missing conf.d file

* Install conf.d file with available variables
* New TTY and HCD conf.d vars
alarm/firmware-brcm43xx: Split firmware from hci service
alarm/firmware-brcm43xx: update package version
Merge pull request #851 from h0tw1r3/wandboard

alarm/firmware-brcm43xx Bluetooth firmware loading improvements