MIPS: Enable the ll_prof profiler on MIPS.

BUG=
TEST=

Review URL: http://codereview.chromium.org/8509006
Patch from Gergely Kis <gergely@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9944 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/log.cc

@@ -1450,6 +1450,8 @@ void Logger::LogCodeInfo() {
   const char arch[] = "x64";
 #elif V8_TARGET_ARCH_ARM
   const char arch[] = "arm";
+#elif V8_TARGET_ARCH_MIPS
+  const char arch[] = "mips";
 #else
   const char arch[] = "unknown";
 #endif

tools/ll_prof.py

@@ -334,6 +334,7 @@ class LogReader(object):
   _ARCH_TO_POINTER_TYPE_MAP = {
     "ia32": ctypes.c_uint32,
     "arm": ctypes.c_uint32,
+    "mips": ctypes.c_uint32,
     "x64": ctypes.c_uint64
   }