mrproper: cleanup default refs files

Ensure mrproper removes the default git reference files for mainline
next and stable. This will force these Kconfig files to be generated
after running mrproper target.

Reviewed-by: Luis Chamberlain <[email protected]>
Reviewed-by: Chuck Lever <[email protected]>
Signed-off-by: Daniel Gomez <[email protected]>

Author: dkruces

Makefile

@@ -265,6 +265,7 @@ mrproper:
 	$(Q)rm -f playbooks/secret.yml $(KDEVOPS_EXTRA_ADDON_DEST)
 	$(Q)rm -rf include
 	$(Q)rm -rf guestfs
+	$(Q)$(MAKE) -f scripts/gen-refs-default.Makefile _refs-default-clean
 
 kconfig-help-menu:
 	$(Q)$(MAKE) -s -C scripts/kconfig help

scripts/gen-refs-default.Makefile

@@ -43,4 +43,10 @@ refs-default: $(REFS_DEFAULT_TARGETS) _gen-default-refs-development refs-user-cl
 PHONY += _refs-default
 _refs-default: $(REFS_DEFAULT_TARGETS)
 
+PHONY += _refs-default-clean
+_refs-default-clean:
+	$(Q)rm --force workflows/linux/refs/default/Kconfig.linus
+	$(Q)rm --force workflows/linux/refs/default/Kconfig.next
+	$(Q)rm --force workflows/linux/refs/default/Kconfig.stable
+
 .PHONY: $(PHONY)