PNaCl: Add more MIPS support to the toolchain

pnacl/build.sh

Index: pnacl/build.sh
diff --git a/pnacl/build.sh b/pnacl/build.sh
index d3ba4aeeb5336578c1f6d61637245d6a210787d4..e955cfdaf4fbaf1c73c13884c2b369fb9076661b 100755
--- a/pnacl/build.sh
+++ b/pnacl/build.sh
@@ -604,7 +604,7 @@ libs() {
   libs-clean
   libs-support newlib
   newlib
-  for arch in arm x86-32 x86-64; do
+  for arch in arm x86-32 x86-64 mips32; do
     dummy-irt-shim ${arch}
   done
   compiler-rt-all
@@ -2853,7 +2853,7 @@ libs-support() {
   fi
   libs-support-bitcode $libmode
   local arch
-  for arch in arm x86-32 x86-64; do
+  for arch in arm x86-32 x86-64 mips32; do
     libs-support-native ${arch}
   done
 }