Revert "ISSUE 6849488 Bluedroid stack, remove system/bluetooth."

This reverts commit b620dc60.

bluetoothd.te

+# bluetoothd - bluetooth daemon
+type bluetoothd, domain;
+type bluetoothd_exec, exec_type, file_type;
+
+init_daemon_domain(bluetoothd)
+allow bluetoothd self:capability { setuid net_raw net_bind_service net_admin };
+allow bluetoothd self:socket *;
+allow bluetoothd bluetoothd_data_file:dir create_dir_perms;
+allow bluetoothd bluetoothd_data_file:file create_file_perms;
+unix_socket_connect(bluetoothd, dbus, dbusd)

file.te

@@ -41,6 +41,7 @@ type shell_data_file, file_type, data_file_type;
 # /data/gps
 type gps_data_file, file_type, data_file_type;
 # /data/misc subdirectories
+type bluetoothd_data_file, file_type, data_file_type;
 type bluetooth_data_file, file_type, data_file_type;
 type keystore_data_file, file_type, data_file_type;
 type vpn_data_file, file_type, data_file_type;

file_contexts

@@ -100,6 +100,7 @@
 /system/bin/installd	u:object_r:installd_exec:s0
 /system/bin/keystore	u:object_r:keystore_exec:s0
 /system/bin/debuggerd	u:object_r:debuggerd_exec:s0
+/system/bin/bluetoothd	u:object_r:bluetoothd_exec:s0
 /system/bin/wpa_supplicant	u:object_r:wpa_exec:s0
 /system/bin/qemud	u:object_r:qemud_exec:s0
 /system/bin/sdcard      u:object_r:sdcardd_exec:s0
@@ -124,6 +125,7 @@
 /data/tombstones(/.*)?	u:object_r:tombstone_data_file:s0
 /data/local(/.*)?	u:object_r:shell_data_file:s0
 # Misc data
+/data/misc/bluetoothd(/.*)?	u:object_r:bluetoothd_data_file:s0
 /data/misc/bluetooth(/.*)?	u:object_r:bluetooth_data_file:s0
 /data/misc/keystore(/.*)?	u:object_r:keystore_data_file:s0
 /data/misc/vpn(/.*)?		u:object_r:vpn_data_file:s0

system.te

@@ -106,6 +106,7 @@ unix_socket_connect(system, zygote, zygote)
 unix_socket_connect(system, keystore, keystore)
 unix_socket_connect(system, dbus, dbusd)
 unix_socket_connect(system, gps, gpsd)
+unix_socket_connect(system, bluetooth, bluetoothd)
 unix_socket_send(system, wpa, wpa)
 
 # Communicate over a socket created by surfaceflinger.