Enable Async MTE in bpfloader.

This change enables Async mode ARM MTE in the bpfloader process on compatible
hardware and has no effect otherwise.

Bug: 181603044
Test: atest under system/bpf
Change-Id: I6340055fea1f97fcc781b418e2465a7961ecedf4
diff --git a/bpfloader/Android.bp b/bpfloader/Android.bp
index 7a6a4c4..7e7139f 100644
--- a/bpfloader/Android.bp
+++ b/bpfloader/Android.bp
@@ -36,6 +36,7 @@
     ],
     sanitize: {
         integer_overflow: true,
+        memtag_heap: true,
     },
     clang: true,
     shared_libs: [