ARM: Fix vixl related branch issue in JNI.

Fix VIXL asserts in EncodeLabelFor in JNI macro assembler when
label is out of range of 16-bit branch (now a veneer is correctly
used).

bug:32545704

Test: ART_USE_VIXL_ARM_BACKEND=true m test-art-host
Test: ART_USE_VIXL_ARM_BACKEND=true m test-art-target
Change-Id: Ie6401394cf364daeaaf107b42275997d2edf5b6d
diff --git a/compiler/utils/assembler_thumb_test.cc b/compiler/utils/assembler_thumb_test.cc
index 50a1d9f..4e9b619 100644
--- a/compiler/utils/assembler_thumb_test.cc
+++ b/compiler/utils/assembler_thumb_test.cc
@@ -1717,6 +1717,11 @@
 
   __ ExceptionPoll(scratch_register, 0);
 
+  // Push the target out of range of branch emitted by ExceptionPoll.
+  for (int i = 0; i < 64; i++) {
+    __ Store(FrameOffset(2047), scratch_register, 4);
+  }
+
   __ DecreaseFrameSize(4096);
   __ DecreaseFrameSize(32);
   __ RemoveFrame(frame_size, callee_save_regs);