Add sepolicy for contexthub HAL

Adding sepolicty for contexthub service.

Test: GTS tests pass.
Change-Id: I2576b8028d12a31151d7b7869679b853eb16c75e
diff --git a/private/file_contexts b/private/file_contexts
index c081f5b..41e1459 100644
--- a/private/file_contexts
+++ b/private/file_contexts
@@ -231,6 +231,7 @@
 /system/lib(64)?/libart.*        u:object_r:libart_file:s0
 /system/bin/hw/android\.hardware\.audio@2\.0-service          u:object_r:hal_audio_default_exec:s0
 /system/bin/hw/android\.hardware\.boot@1\.0-service           u:object_r:hal_boot_exec:s0
+/system/bin/hw/android\.hardware\.contexthub@1\.0-service     u:object_r:hal_contexthub_default_exec:s0
 /system/bin/hw/android\.hardware\.dumpstate@1\.0-service      u:object_r:hal_dumpstate_default_exec:s0
 /system/bin/hw/android\.hardware\.graphics\.allocator@2\.0-service   u:object_r:hal_graphics_allocator_default_exec:s0
 /system/bin/hw/android\.hardware\.graphics\.composer@2\.1-service    u:object_r:hal_graphics_composer_default_exec:s0
diff --git a/private/hal_contexthub_default.te b/private/hal_contexthub_default.te
new file mode 100644
index 0000000..99b6b93
--- /dev/null
+++ b/private/hal_contexthub_default.te
@@ -0,0 +1,4 @@
+type hal_contexthub_default, hal_contexthub, domain;
+type hal_contexthub_default_exec, exec_type, file_type;
+
+init_daemon_domain(hal_contexthub_default)