Dynamic cfg: Enable support on CoT for other configs

This patch implements support for adding dynamic configurations for
BL31 (soc_fw_config), BL32 (tos_fw_config) and BL33 (nt_fw_config). The
necessary cert tool support and changes to default chain of trust are made
for these configs.

Change-Id: I25f266277b5b5501a196d2f2f79639d838794518
Signed-off-by: Soby Mathew <soby.mathew@arm.com>
diff --git a/tools/cert_create/include/cert.h b/tools/cert_create/include/cert.h
index 9b4ef5a..07bb337 100644
--- a/tools/cert_create/include/cert.h
+++ b/tools/cert_create/include/cert.h
@@ -12,7 +12,7 @@
 #include "ext.h"
 #include "key.h"
 
-#define CERT_MAX_EXT			4
+#define CERT_MAX_EXT			5
 
 /*
  * This structure contains information related to the generation of the