Move hci_attach to hikey specific policy

Move hci_attach from core SELinux policy to hikey specific SELinux
policy. hci_attach is only ever used on hikey.

Change-Id: If26ac80e7051db7b2020ce4992b8a7637b5bb907
Test: policy compiles.
diff --git a/sepolicy/hci_attach.te b/sepolicy/hci_attach.te
new file mode 100644
index 0000000..3cb0953
--- /dev/null
+++ b/sepolicy/hci_attach.te
@@ -0,0 +1,9 @@
+type hci_attach, domain;
+type hci_attach_exec, exec_type, file_type;
+
+init_daemon_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;