Make fmq product_available

Vendors already can use these targets on /vendor. This change makes them
available to /product as well.

More about product partitions:
https://source.android.com/docs/core/architecture/partitions/product-partitions

Bug: 336989719
Test: mm
Change-Id: I2cb1817525d4b2b3033e0e633ea2f8e7f5653a6c
diff --git a/common/support/Android.bp b/common/support/Android.bp
index 12ab1f7..56700fa 100644
--- a/common/support/Android.bp
+++ b/common/support/Android.bp
@@ -10,6 +10,7 @@
 cc_library_static {
     name: "libaidlcommonsupport",
     vendor_available: true,
+    product_available: true,
     host_supported: true,
     target: {
         darwin: {