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/amd/cimx/sb800/Makefile.inc b/src/southbridge/amd/cimx/sb800/Makefile.inc
index 0ff9e1e..2ed5096 100644
--- a/src/southbridge/amd/cimx/sb800/Makefile.inc
+++ b/src/southbridge/amd/cimx/sb800/Makefile.inc
@@ -34,7 +34,7 @@
ramstage-$(CONFIG_HAVE_ACPI_RESUME) += spi.c
ramstage-$(CONFIG_GENERATE_ACPI_TABLES) += fadt.c
-romstage-$(CONFIG_USBDEBUG) += ../../sb800/enable_usbdebug.c
+romstage-$(CONFIG_USBDEBUG_IN_ROMSTAGE) += ../../sb800/enable_usbdebug.c
ramstage-$(CONFIG_USBDEBUG) += ../../sb800/enable_usbdebug.c
ramstage-y += smbus.c