debuggerd: increase the default limit on tombstones to 32.

We're missing useful crashes, especially on hwasan builds.

Bug: http://b/140580637
Test: run crasher
Change-Id: Ib5d8d3bd3fc4d7fec77d0b10302e5595f97a3515
diff --git a/debuggerd/tombstoned/tombstoned.cpp b/debuggerd/tombstoned/tombstoned.cpp
index bbeb181..d09b8e8 100644
--- a/debuggerd/tombstoned/tombstoned.cpp
+++ b/debuggerd/tombstoned/tombstoned.cpp
@@ -100,7 +100,7 @@
 
   static CrashQueue* for_tombstones() {
     static CrashQueue queue("/data/tombstones", "tombstone_" /* file_name_prefix */,
-                            GetIntProperty("tombstoned.max_tombstone_count", 10),
+                            GetIntProperty("tombstoned.max_tombstone_count", 32),
                             1 /* max_concurrent_dumps */);
     return &queue;
   }