build: Add USE_SET_METADATA tag

On some of the older devices the recovery doesn't support
metadata when setting permissions.  This allows to use
set_perm vs set_metadata you will need to set
USE_SET_METADATA := false inside your boardconfig.mk

Thanks to flintman for fix
Merge pull request #4 from WildfireDEV/kitkat1

build: Add USE_SET_METADATA tag