ruby: make selinux permissive

Change-Id: If12312f8738c939477ff996c7525611db86d1bf5
ruby: add ramdisk offset

Change-Id: I9ad5bebe6160b516e22d5d852692f35d463103a0
ruby: remove ti wifi defines

 * currently it breaks the build when using a caf based kernel

Change-Id: I1a3f6cdfcd2303cf9abec3431e84dab823391c58