[test] Add API test target for libbssl

And checks the function hmac_sha256.

Bug: 301068421
Test: atest libbssl_avf_nostd.test
Change-Id: I3b4ebc9d9bd473b79103038181e2310a523f29a6
diff --git a/libs/bssl/TEST_MAPPING b/libs/bssl/TEST_MAPPING
new file mode 100644
index 0000000..a91e8c5
--- /dev/null
+++ b/libs/bssl/TEST_MAPPING
@@ -0,0 +1,9 @@
+// When adding or removing tests here, don't forget to amend _all_modules list in
+// wireless/android/busytown/ath_config/configs/prod/avf/tests.gcl
+{
+  "avf-presubmit" : [
+    {
+      "name" : "libbssl_avf_nostd.test"
+    }
+  ]
+}
\ No newline at end of file