kconfig: conf -D just takes default config w/out assuming input_mode is set_default

Previously, both -d and -D specified that input_mode was set_default; the only difference was that -D took an argument (setting defconfig_file).

With this change, -d specifies set_default, and -D merely sets defconfig_file. This means that (for example) 'make i386_defconfig' becomes
'conf -d -D $def $(Kconfig)'. The goal here is to enable future targets to specify a default conf file without being forced to set input_mode to set_default.

---
 scripts/kconfig/Makefile |    4 ++--
 scripts/kconfig/conf.c   |    1 -
 2 files changed, 2 insertions(+), 3 deletions(-)

index 7df7ea6..ce7d754 100644
@@ -66,11 +66,11 @@ ifeq ($(KBUILD_DEFCONFIG),)
 	$< -d $(Kconfig)
 else
 	@echo "*** Default configuration is based on '$(KBUILD_DEFCONFIG)'"
-	$(Q)$< -D arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG) $(Kconfig)
+	$(Q)$< -d -D arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG) $(Kconfig)
 endif
 
 %_defconfig: $(obj)/conf
-	$(Q)$< -D arch/$(SRCARCH)/configs/$@ $(Kconfig)
+	$(Q)$< -d -D arch/$(SRCARCH)/configs/$@ $(Kconfig)
 
 # Help text used by make help
 help:

index e17767e..9a27638 100644
@@ -515,7 +515,6 @@ int main(int ac, char **av)
 			input_mode = set_default;
 			break;
 		case 'D':
-			input_mode = set_default;
 			defconfig_file = optarg;
 			break;
 		case 'n':

1.5.5