Update profiling doc (#1576)

[ROCm/hip commit: 70f2cd1317]
2019-10-24 17:51:55 +05:30
@@ -196,8 +196,7 @@ This file can be copied and edited to provide more selective HSA event recording


 #### How to enable profiling at HIP build time
-Recent pre-built packages of HIP are always built with profiling support enabled.
-For developer builds, you must enable marker support manually when compiling HIP.
+Pre-built packages of HIP are not built with profiling support enabled.You must enable marker support manually when compiling HIP.

 1. Build HIP with ATP markers enabled
 HIP pre-built packages are enabled with ATP marker support by default.