Confine hci_attach, but leave it permissive for now.

Change-Id: I4b6cacf70805065ad6fd9678417283c25a53b51b
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>

hci_attach.te

 type hci_attach, domain;
+permissive hci_attach;
 type hci_attach_exec, exec_type, file_type;
 
 init_daemon_domain(hci_attach)
-unconfined_domain(hci_attach)
+
+allow hci_attach kernel:system module_request;
+allow hci_attach hci_attach_dev:chr_file rw_file_perms;
+allow hci_attach bluetooth_efs_file:dir r_dir_perms;
+allow hci_attach bluetooth_efs_file:file r_file_perms;