[MIPS] Let python_arch script recognize MIPS arch.

The script has to be aware of MIPS arch, so it can figure out that the libary
is for MIPS.

BUG= https://code.google.com/p/chromium/issues/detail?id=130022
TEST=make chrome


Review URL: https://chromiumcodereview.appspot.com/11819009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@175689 0039d316-1c4b-4281-b951-d872f2087c98

build/linux/python_arch.sh

@@ -27,6 +27,12 @@ if [ $? -eq 0 ]; then
   exit 0
 fi
 
+echo $file_out | grep -qs "MIPS"
+if [ $? -eq 0 ]; then
+  echo mipsel
+  exit 0
+fi
+
 echo $file_out | grep -qs "x86-64"
 if [ $? -eq 0 ]; then
   echo x64