hikey: Add support for contexthub hal and neonkey / argonkey sensor hal

Compile: make TARGET_SENSOR_MEZZANINE=<mezzanine_name>
         (<mezzanine_name> can be neonkey or argonkey)

Test: builds
Change-Id: I11c2734965b96cb34aef7558b7c822d0e5ea5c65
Signed-off-by: Ben Fennema <fennema@google.com>
diff --git a/sepolicy/nanoapp_cmd.te b/sepolicy/nanoapp_cmd.te
new file mode 100644
index 0000000..c4f5b3e
--- /dev/null
+++ b/sepolicy/nanoapp_cmd.te
@@ -0,0 +1,8 @@
+type nanoapp_cmd, domain;
+type nanoapp_cmd_exec, exec_type, vendor_file_type, file_type;
+
+init_daemon_domain(nanoapp_cmd)
+
+allow nanoapp_cmd sensors_device:chr_file rw_file_perms;
+allow nanoapp_cmd sysfs_nanoapp_cmd:dir search;
+allow nanoapp_cmd sysfs_nanoapp_cmd:file rw_file_perms;