Revert "ART: Remove wrong DCHECK"

This reverts commit 5be30072c5a750617dc3f9380776d074f26d9f32.

The underlying computation was fixed in AOSP before.

Bug: 17772057
Bug: 17763227
Bug: 17762845
diff --git a/compiler/dex/quick/arm64/int_arm64.cc b/compiler/dex/quick/arm64/int_arm64.cc
index 0e00698..e8ee28d 100644
--- a/compiler/dex/quick/arm64/int_arm64.cc
+++ b/compiler/dex/quick/arm64/int_arm64.cc
@@ -483,6 +483,7 @@
       } else {
         reconstructed_imm = base + 1;
       }
+      DCHECK_EQ(reconstructed_imm, magic_table[lit].magic64) << " for literal " << lit;
     }
 
     // Load the magic constant in two instructions.