Disable the new pass manager for libhwui

Clang is producing non-deterministic result when the new pass manager is
enabled.  Turn it off as a temporary workaround.

Test: presubmit
Bug: 142372146
Change-Id: Ie21d97c0fe6770b0ae9ec103133b940b1eb8a220
diff --git a/libs/hwui/Android.bp b/libs/hwui/Android.bp
index ebba4cb..e0896ce 100644
--- a/libs/hwui/Android.bp
+++ b/libs/hwui/Android.bp
@@ -28,6 +28,11 @@
 
         // clang's warning is broken, see: https://llvm.org/bugs/show_bug.cgi?id=21629
         "-Wno-missing-braces",
+
+        // Clang is producing non-determistic binary when the new pass manager is
+        // enabled. Disable the new PM as a temporary workaround.
+        // b/142372146
+        "-fno-experimental-new-pass-manager",
     ],
 
     include_dirs: [