kconfig: always write out .config

Always write out .config also in the case where config
did not change.
This fixes: http://bugzilla.kernel.org/show_bug.cgi?id=11230

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Cc: Adrian Bunk <bunk@kernel.org>
diff --git a/scripts/kconfig/conf.c b/scripts/kconfig/conf.c
index 9fba838..36b5eed 100644
--- a/scripts/kconfig/conf.c
+++ b/scripts/kconfig/conf.c
@@ -596,7 +596,7 @@
 		break;
 	}
 
-	if (conf_get_changed() && conf_write(NULL)) {
+	if (conf_write(NULL)) {
 		fprintf(stderr, _("\n*** Error during writing of the kernel configuration.\n\n"));
 		exit(1);
 	}