Add LLVM binutils prebuilds in PATH

Test: lunch; manually examine $PATH
Bug: 133170927
Change-Id: Iceb0add1bfde052acf547402f8d932b87cdf0a2d
diff --git a/core/dumpvar.mk b/core/dumpvar.mk
index 59efb04..2f1023f 100644
--- a/core/dumpvar.mk
+++ b/core/dumpvar.mk
@@ -17,6 +17,7 @@
 ANDROID_BUILD_PATHS := $(ABP)
 ANDROID_PREBUILTS := prebuilt/$(HOST_PREBUILT_TAG)
 ANDROID_GCC_PREBUILTS := prebuilts/gcc/$(HOST_PREBUILT_TAG)
+ANDROID_CLANG_PREBUILTS := prebuilts/clang/host/$(HOST_PREBUILT_TAG)
 
 # Dump mulitple variables to "<var>=<value>" pairs, one per line.
 # The output may be executed as bash script.