Add bacon target
Change to find 7 kernel

fix wifi and sound for find7 kernel
Make mixer_paths.xml device specific

 * Make mixer_paths.xml device specific because Bacon and find7 have
   different mic configurations.

 * This will allow speaker phone on find7.

Change-Id: Icdb2a5623256386b3cba1a9c939fc795e8fc1125

Conflicts:
	audio/mixer_paths.xml