MIPS: Fix cctest/test-assembler-mips on MIPS32R1 architecture.

TEST=cctest/test-assembler-mips/MIPS3

BUG=
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/17099010

Patch from Balazs Kilvady <kilvadyb@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15212 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

test/cctest/test-assembler-mips.cc

@@ -337,7 +337,9 @@ TEST(MIPS3) {
   CHECK_EQ(1.8066e16, t.e);
   CHECK_EQ(120.44, t.f);
   CHECK_EQ(10.97451593465515908537, t.g);
-  CHECK_EQ(6.875, t.h);
+  if (kArchVariant == kMips32r2) {
+    CHECK_EQ(6.875, t.h);
+  }
 }