Add AddressSanitizer linker flags for x86.

This is the 1/4 change required to get AddressSanitizer
for Android x86 to work.

Change-Id: I848805af34fdd32a313c991504d6014f9b97ab88
diff --git a/core/clang/TARGET_x86.mk b/core/clang/TARGET_x86.mk
index 6922f97..f982439 100644
--- a/core/clang/TARGET_x86.mk
+++ b/core/clang/TARGET_x86.mk
@@ -71,3 +71,8 @@
 $(clang_2nd_arch_prefix)RS_COMPAT_TRIPLE := i686-linux-android
 
 $(clang_2nd_arch_prefix)TARGET_LIBPROFILE_RT := $(LLVM_RTLIB_PATH)/libclang_rt.profile-i686-android.a
+
+# Address sanitizer clang config
+$(clang_2nd_arch_prefix)ADDRESS_SANITIZER_RUNTIME_LIBRARY := libclang_rt.asan-i686-android
+$(clang_2nd_arch_prefix)ADDRESS_SANITIZER_RPATH := /data/vendor/lib:/$(TARGET_COPY_OUT_VENDOR)/lib:/data/lib
+$(clang_2nd_arch_prefix)ADDRESS_SANITIZER_LINKER := /system/bin/linker_asan