Fix ARM simulator. Unless building for the actual ARM hardware,

inline assembler in C++ code should be IA32 assembly, not ARM.

TBR=erik.corry@gmail.com

Review URL: http://codereview.chromium.org/53011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1597 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/platform-linux.cc

@@ -284,7 +284,7 @@ void OS::Abort() {
 
 
 void OS::DebugBreak() {
-#ifdef ARM
+#if defined(__arm__) || defined(__thumb__)
   asm("bkpt 0");
 #else
   asm("int $3");