squash! make: add targets to debug dependencies variables

To more easily allow comparing the normal and the
'info-boards-supported' output, do not generate for boards that are not
enabled.

makefiles/dependencies_debug.inc.mk

@@ -21,9 +21,15 @@
 # And when comparing two revisions, include the revision in the file names
 
 .PHONY: dependency_debug
+# Only generate the dependencies when the board is not disabled
+# This will allow comparing with the output of `info-boards-supported` more easily
 dependency_debug:
+ifneq (,$(filter-out $(BOARD_BLACKLIST),$(filter $(if $(BOARD_WHITELIST),$(BOARD_WHITELIST), %),$(BOARD))))
 	$(call file_save_dependencies_variables,dependencies_info)
 	@:
+else
+	@echo Skipping $(BOARD) is not whitelisted or blacklisted
+endif
 
 DEPENDENCY_DEBUG_OUTPUT_DIR ?= $(CURDIR)