Kconfig: Add vendorcode debug

This includes Kconfig.debug files under vendorcode into the debugging
menu. Currently it's being added to pull vc/amd/opensil/Kconfig.debug
in.

Change-Id: Ie7c8235354ea5a0b156dcbb147d35c157fbd14da
Signed-off-by: Martin Roth <gaumless@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78634
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <ericllai@google.com>
diff --git a/src/Kconfig b/src/Kconfig
index ae80240..4b60c4b 100644
--- a/src/Kconfig
+++ b/src/Kconfig
@@ -1000,6 +1000,9 @@
 comment "CPU Debug Settings"
 source "src/cpu/*/Kconfig.debug_cpu"
 
+comment "Vendorcode Debug Settings"
+	source "src/vendorcode/*/*/Kconfig.debug"
+
 comment "BLOB Debug Settings"
 source "src/drivers/intel/fsp*/Kconfig.debug_blob"