Wifi Diagnostic Tool Sepolicy

Bug: 253366496
Test: Wifi Diagnostic Tool is workable
Ignore-AOSP-First: AOSP build not support Wifi Diagnostic Tool

Change-Id: I982f7aa9f862f4883a47c8c57ecd7341a9cbd7ec
diff --git a/wifi_diagnostic/file_contexts b/wifi_diagnostic/file_contexts
new file mode 100644
index 0000000..f0a40d5
--- /dev/null
+++ b/wifi_diagnostic/file_contexts
@@ -0,0 +1 @@
+/vendor/bin/wifi_diagnostic        u:object_r:wifi_diagnostic_exec:s0