move bluetooth config to shinano

Change-Id: Iec99ace7aa33419a7be0e75284d8d479c370e912
add hardware keys overlay

enable volume rocker

Change-Id: I4cc6a577972b7f401ff10b375f52f47cf1829c59
Merge branch 'cm-12.0' of https://github.com/CyanogenMod/android_device_sony_castor_windy into mkl

Conflicts:
	BoardConfigCommon.mk
	bluetooth/bdroid_buildcfg.h