Fix issues with Arm's use of embedded constant pools

src/mips/assembler-mips.cc

Index: src/mips/assembler-mips.cc
diff --git a/src/mips/assembler-mips.cc b/src/mips/assembler-mips.cc
index fc664aafa524df3888f25ee752a00837515753d3..42de24c0dd824d106f57054f6784eb5f998a3383 100644
--- a/src/mips/assembler-mips.cc
+++ b/src/mips/assembler-mips.cc
@@ -326,6 +326,14 @@ void Assembler::Align(int m) {
 }
 
 
+void Assembler::DataAlign(int m) {
+  DCHECK(m >= 2 && base::bits::IsPowerOfTwo32(m));
+  while ((pc_offset() & (m - 1)) != 0) {
+    db(0);
+  }
+}
+
+
 void Assembler::CodeTargetAlign() {
   // No advantage to aligning branch/call targets to more than
   // single instruction, that I am aware of.