d851: select bcm mixer_paths.xml

Change-Id: Ie2a550ca0f19a487c738f975d4dba9a55b34bb87
d851: update fstab

* add recoveryonly to boot and recovery partitions
* update deprecated prefix on usb/externalsd
* set auto for usb/externalsd filesystem

Change-Id: Ie57cfaebd72b5e31398b3dfa9f83918efb6fc16f
Merge pull request #1 from CyanogenMod/cm-12.0

Cm 12.0