Add the host notice file to the SDK platform-tools folder.

Change-Id: Id9e789fed635c6e5b43254f8ef6ec353302ca1be
diff --git a/core/Makefile b/core/Makefile
index 1d3110d..656cc09 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -1403,6 +1403,7 @@
 		cp -f $(target_notice_file_txt) \
 				$(PRIVATE_DIR)/platforms/android-$(PLATFORM_VERSION)/images/NOTICE.txt && \
 		cp -f $(tools_notice_file_txt) $(PRIVATE_DIR)/tools/NOTICE.txt && \
+		cp -f $(tools_notice_file_txt) $(PRIVATE_DIR)/platform-tools/NOTICE.txt && \
 		if [ -f $(PRIVATE_DIR)/platform-tools/llvm-rs-cc ]; then \
 			$(HOST_STRIP_SDK_LLVM) $(PRIVATE_DIR)/platform-tools/llvm-rs-cc; \
 		fi && \