Fix the path for findbugs.

Change-Id: I45485f1aeaf7fc3db2839f42829278d8c0ec97e3
diff --git a/core/config.mk b/core/config.mk
index cc0e19f..79d5985 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -407,7 +407,8 @@
 # dx is java behind a shell script; no .exe necessary.
 DX := $(HOST_OUT_EXECUTABLES)/dx
 ZIPALIGN := $(HOST_OUT_EXECUTABLES)/zipalign$(HOST_EXECUTABLE_SUFFIX)
-FINDBUGS := prebuilt/common/findbugs/bin/findbugs
+FINDBUGS_DIR := external/owasp/sanitizer/tools/findbugs/bin
+FINDBUGS := $(FINDBUGS_DIR)/findbugs
 EMMA_JAR := external/emma/lib/emma$(COMMON_JAVA_PACKAGE_SUFFIX)
 
 # Tool to merge AndroidManifest.xmls