Fix linker_asan[64] apex bootstrap build error

This commit fixes `linker_asan[64]` apex bootstrap build errors.
Without this change, `make -j SANITIZE_TARGET=address` results in:

  FAILED: ninja: 'out/target/product/walleye/system/bin/linker_asan64',
  needed by 'out/target/product/walleye/system/bin/app_process64',
  missing and no known rule to make it

Test: lunch aosp_walleye-userdebug && make SANITIZE_TARGET=address
Change-Id: I980a36499cd327db307321fc8e4548925e7d56bf
diff --git a/core/clang/TARGET_mips.mk b/core/clang/TARGET_mips.mk
index dfd99b2..3e54a66 100644
--- a/core/clang/TARGET_mips.mk
+++ b/core/clang/TARGET_mips.mk
@@ -6,3 +6,4 @@
 
 # Address sanitizer clang config
 $(clang_2nd_arch_prefix)ADDRESS_SANITIZER_LINKER := /system/bin/linker_asan
+$(clang_2nd_arch_prefix)ADDRESS_SANITIZER_LINKER_FILE := /system/bin/bootstrap/linker_asan