Make tracing_perfetto available to vendor/.

Lyric and others will want to access the Perfetto API directly as well.

Bug: 373924379
Change-Id: I67379706f91ed8c76e6c26f2c90560c7c447673c
Flag: EXEMPT No binary change, just build target visibility changes
diff --git a/libs/tracing_perfetto/Android.bp b/libs/tracing_perfetto/Android.bp
index b5c56c5..9a2d4f7 100644
--- a/libs/tracing_perfetto/Android.bp
+++ b/libs/tracing_perfetto/Android.bp
@@ -47,4 +47,6 @@
     ],
 
     host_supported: true,
+    // for vndbinder
+    vendor_available: true,
 }