1. Add the essential sysfs_wlc policy files to gs-common to cleanup the
wireless_charger module dependent problems
2. Move out sepolicy type definitions to each device so the sepolicy can
be self contained
Bug: 263830018
Change-Id: I46da58685c5180d774fc445dc1f1c6f3a1780cc0
Signed-off-by: Ken Yang <yangken@google.com>