Revert "arm: hammerhead: Use LGE rfkill driver"

This reverts commit beb46a9d729e061b0cb9012b5e347450345bede5.
Seems to cause issues with BT
msm_serial_hs: Update to latest CAF version

* attempt to fix bt issues

Change-Id: I139877ffe9bfeb96cf22ed47c568d623ac5fd0ee
bluesleep: Use version from lge msm8974

* attempt to fix bt issues

Change-Id: I1655b9ab9edb53377bda0b09b780dc3a6342f1df