Doing another 'make' after a 'make clean' was broken until now. Fix it

by not deleting build/config.h during 'make clean' (only in 'make distclean').

Also, change the default behaviour of 'make' from asking the user to
run 'make config' (or similar) to actually _run_ 'make config' without
asking questions. It's always possible to explicitly invoke
'make menuconfig' or 'make xconfig' and so on, of course.

Finally, make _all_ targets (allyesconfig, randconfig, and so on)
generate a build/config.h file, as we always #include it.

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Jordan Crouse <jordan.crouse@amd.com>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3211 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

payloads/coreinfo/util/kconfig/confdata.c

@@ -679,8 +679,10 @@ int conf_write_autoconf(void)
 
 	file_write_dep("build/auto.conf.cmd");
 
+#if 0
 	if (conf_split_config())
 		return 1;
+#endif
 
 	out = fopen(".tmpconfig", "w");
 	if (!out)