kbuild: add distclean info to 'make help' and more details for 'clean'

Add distclean info, that was previously missing, to 'make help'.
Also add a few more details to the 'make clean' help text.

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

diff --git a/Makefile b/Makefile
index 241fed3..fce530a 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -1086,9 +1086,10 @@ boards := $(notdir $(boards))
 
 help:
        @echo  'Cleaning targets:'
-       @echo  '  clean           - remove most generated files but keep the config'
+       @echo  '  clean           - remove most generated files but keep the config and'
+       @echo  '                    enough build support to build external modules'
        @echo  '  mrproper        - remove all generated files + config + various backup files'
-       @echo  '  distclean       - mrproper + patch files'
+       @echo  '  distclean       - mrproper + remove editor backup and patch files'
        @echo  ''
        @echo  'Configuration targets:'
        @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help