Add dirgroup for trusty genrule

Bug: 358302178
Test: m lk.elf.x86_64 lk.elf.arm64
Change-Id: I2514a7cbe52c03ad76022564cb892c6a72525bde
diff --git a/Android.bp b/Android.bp
index b88f541..67d6868 100644
--- a/Android.bp
+++ b/Android.bp
@@ -131,3 +131,9 @@
     },
     min_sdk_version: "29",
 }
+
+dirgroup {
+    name: "trusty_dirgroup_hardware_libhardware",
+    dirs: ["."],
+    visibility: ["//trusty/vendor/google/aosp/scripts"],
+}