MIPS: Increase code space first page size due to r17334.

src/spaces.cc

Index: src/spaces.cc
diff --git a/src/spaces.cc b/src/spaces.cc
index 9ed8d9e7553b8eb29b53ba5ab88ee6c71e0b6e12..ee6a890424be06e7da351c44c5f2757cbb214a9a 100644
--- a/src/spaces.cc
+++ b/src/spaces.cc
@@ -1080,10 +1080,8 @@ intptr_t PagedSpace::SizeOfFirstPage() {
         size = AreaSize();
       } else {
 #if V8_TARGET_ARCH_MIPS
-        // On MIPS, code stubs seem to be quite a bit larger.
-        // TODO(olivf/MIPS folks): Can we do anything about this? Does it
-        // indicate the presence of a bug?
-        size = 464 * KB;
+        // TODO(plind): Investigate larger code stubs size on MIPS.
+        size = 480 * KB;
 #else
         size = 416 * KB;
 #endif