Fix x86 build.

Link libLLVMX86Utils.

Change-Id: I272f3647a0e2bed17448797f145e40df5a58c970
diff --git a/Android.mk b/Android.mk
index f628caa..c580fb2 100644
--- a/Android.mk
+++ b/Android.mk
@@ -131,7 +131,8 @@
   ifeq ($(TARGET_ARCH),x86) # We don't support x86-64 right now
     LOCAL_STATIC_LIBRARIES := \
       libLLVMX86CodeGen \
-      libLLVMX86Info
+      libLLVMX86Info \
+      libLLVMX86Utils
   else
     $(error Unsupported TARGET_ARCH $(TARGET_ARCH))
   endif