Create otatools build target with dist

BUG: b/275545565
TEST: m otatools-dist dist
Change-Id: I8484a7927955bf694221937ba778db7065b83eb2
diff --git a/core/Makefile b/core/Makefile
index c4d5530..c8eecee 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -5246,6 +5246,10 @@
 .PHONY: otatools-package
 otatools-package: $(BUILT_OTATOOLS_PACKAGE)
 
+$(call dist-for-goals, otatools-package, \
+  $(BUILT_OTATOOLS_PACKAGE) \
+)
+
 endif # build_otatools_package
 
 # -----------------------------------------------------------------