A64: Mark mjsunit/sin-cos as failing in debug mode.

test/mjsunit/mjsunit.status

Index: test/mjsunit/mjsunit.status
diff --git a/test/mjsunit/mjsunit.status b/test/mjsunit/mjsunit.status
index 03513db75beca97b3b65c9f6674a57d55de78cd1..3097eae025ce2135d8825b2ec6e3c9720831e616 100644
--- a/test/mjsunit/mjsunit.status
+++ b/test/mjsunit/mjsunit.status
@@ -174,6 +174,9 @@
 
   # BUG(v8:3147). It works on other architectures by accident.
   'regress/regress-conditional-position': [FAIL],
+
+  # BUG(v8:3149). Incorrect register usage exposed in debug mode.
+  'sin-cos': [PASS, ['mode == debug', FAIL]],
 }],  # 'arch == a64'
 
 ['arch == a64 and mode == debug and simulator_run == True', {