Enable heapprofd

Bug: 123075129

Change-Id: Ib0165ea6abddde5ce1293bce6bc0ca23f344a811
diff --git a/system.prop b/system.prop
index 1e13f77..b6a5d2e 100644
--- a/system.prop
+++ b/system.prop
@@ -46,6 +46,7 @@
 
 # system props for perfetto
 persist.traced.enable=1
+persist.heapprofd.enable=1
 
 # System prop to turn on CdmaLTEPhone always
 telephony.lteOnCdmaDevice=1