usbdebug: Fix boards without EARLY_CBMEM_INIT
The main usbdebug file lib/usbdebug.c was removed from romstage
build with commit f8bf5a10 but the chipset-specific parts were not,
leading to unresolved symbol errors for AMD platforms.
Add a silent Kconfig variable USBDEBUG_IN_ROMSTAGE for convenient
use of this feature.
Change-Id: I0cd3fccf2612cf08497aa5c3750c89bf43ff69be
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/3983
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@google.com>
diff --git a/src/southbridge/sis/sis966/Makefile.inc b/src/southbridge/sis/sis966/Makefile.inc
index 1555973..1a9ea65 100644
--- a/src/southbridge/sis/sis966/Makefile.inc
+++ b/src/southbridge/sis/sis966/Makefile.inc
@@ -10,7 +10,7 @@
ramstage-y += aza.c
ramstage-y += reset.c
-romstage-$(CONFIG_USBDEBUG) += enable_usbdebug.c
+romstage-$(CONFIG_USBDEBUG_IN_ROMSTAGE) += enable_usbdebug.c
ramstage-$(CONFIG_USBDEBUG) += enable_usbdebug.c
chipset_bootblock_inc += $(src)/southbridge/sis/sis966/romstrap.inc