Revert "Revert "Intrinsify Integer.valueOf.""

Fix heap poisoning.
LOG INFO instead of ERROR to avoid run-test failures with --no-image.

bug:30933338
Test: ART_HEAP_POISONING=true test-art-host test-art-target

This reverts commit db7b44ac3ea80a722aaed12e913ebc1661a57998.

Change-Id: I0b7d4f1eb11c62c9a3df8e0de0b1a5d8af760181
diff --git a/compiler/optimizing/intrinsics_mips.cc b/compiler/optimizing/intrinsics_mips.cc
index 5999677..4ba4bc7 100644
--- a/compiler/optimizing/intrinsics_mips.cc
+++ b/compiler/optimizing/intrinsics_mips.cc
@@ -2686,6 +2686,8 @@
 UNIMPLEMENTED_INTRINSIC(MIPS, UnsafeGetAndSetLong)
 UNIMPLEMENTED_INTRINSIC(MIPS, UnsafeGetAndSetObject)
 
+UNIMPLEMENTED_INTRINSIC(MIPS, IntegerValueOf)
+
 UNREACHABLE_INTRINSICS(MIPS)
 
 #undef __