Sepolicy for light hal.

Bug: 32022100
Test: end to end
Change-Id: I5dd9b64c98a5c549fdaf9e47d5a92fa6963370c7
diff --git a/public/hal_light.te b/public/hal_light.te
new file mode 100644
index 0000000..cdb36bb
--- /dev/null
+++ b/public/hal_light.te
@@ -0,0 +1,9 @@
+# light subsystem
+type hal_light, domain;
+type hal_light_exec, exec_type, file_type;
+
+# hwbinder access
+hwbinder_use(hal_light)
+
+# call into system_server process (callbacks)
+binder_call(hal_light, system_server)