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>

scripts/kconfig/conf.c

@@ -596,7 +596,7 @@ int main(int ac, char **av)
 		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);
 	}